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220012101220 = 22529467981071
BaseRepresentation
bin1100110011100110111…
…1100011111001100100
3210000220000120202111111
43030321233203321210
512101041044214340
6245023330514404
721616051001302
oct3147157437144
9700800522444
10220012101220
118534110602a
1236781735a04
1317993372ba2
14a911c37272
155aca2d0aea
hex3339be3e64

220012101220 has 48 divisors (see below), whose sum is σ = 478065369600. Its totient is φ = 84950983040.

The previous prime is 220012101217. The next prime is 220012101223. The reversal of 220012101220 is 22101210022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (220012101217) and next prime (220012101223).

It is a self number, because there is not a number n which added to its sum of digits gives 220012101220.

It is not an unprimeable number, because it can be changed into a prime (220012101223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2673285 + ... + 2754355.

It is an arithmetic number, because the mean of its divisors is an integer number (9959695200).

Almost surely, 2220012101220 is an apocalyptic number.

220012101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220012101220 is an abundant number, since it is smaller than the sum of its proper divisors (258053268380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220012101220 is a wasteful number, since it uses less digits than its factorization.

220012101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85788 (or 85786 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220012101220 its reverse (22101210022), we get a palindrome (242113311242).

The spelling of 220012101220 in words is "two hundred twenty billion, twelve million, one hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 4679 9358 18716 23395 46790 81071 93580 135691 162142 271382 324284 405355 542764 678455 810710 1356910 1621420 2351059 2713820 4702118 9404236 11755295 23510590 47021180 379331209 758662418 1517324836 1896656045 3793312090 7586624180 11000605061 22001210122 44002420244 55003025305 110006050610 220012101220