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12200202220 = 2252281267431
BaseRepresentation
bin10110101110011000…
…00100111111101100
31011111020211111011111
423113030010333230
5144441222432340
65334340401404
7611222002453
oct132714047754
934436744144
1012200202220
1151a0772558
1224459a6264
1311c578cb8b
1483a453b9a
154b6119aea
hex2d7304fec

12200202220 has 24 divisors (see below), whose sum is σ = 25631752608. Its totient is φ = 4877923200.

The previous prime is 12200202109. The next prime is 12200202229. The reversal of 12200202220 is 2220200221.

It is a self number, because there is not a number n which added to its sum of digits gives 12200202220.

It is not an unprimeable number, because it can be changed into a prime (12200202229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88096 + ... + 179335.

It is an arithmetic number, because the mean of its divisors is an integer number (1067989692).

Almost surely, 212200202220 is an apocalyptic number.

12200202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12200202220 is an abundant number, since it is smaller than the sum of its proper divisors (13431550388).

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

12200202220 is a wasteful number, since it uses less digits than its factorization.

12200202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269721 (or 269719 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 12200202220 its reverse (2220200221), we get a palindrome (14420402441).

The spelling of 12200202220 in words is "twelve billion, two hundred million, two hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 2281 4562 9124 11405 22810 45620 267431 534862 1069724 1337155 2674310 5348620 610010111 1220020222 2440040444 3050050555 6100101110 12200202220