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10021311222 = 2313128478349
BaseRepresentation
bin10010101010101000…
…10001001011110110
3221212101212100121220
421111110101023312
5131010423424342
64334223251210
7503223511536
oct112524211366
927771770556
1010021311222
11428285049a
121b38149b06
13c3923c670
146b0d0d4c6
153d9bbc5ec
hex2555112f6

10021311222 has 16 divisors (see below), whose sum is σ = 21584362800. Its totient is φ = 3083480352.

The previous prime is 10021311221. The next prime is 10021311233. The reversal of 10021311222 is 22211312001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021311221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64239097 + ... + 64239252.

It is an arithmetic number, because the mean of its divisors is an integer number (1349022675).

Almost surely, 210021311222 is an apocalyptic number.

10021311222 is an abundant number, since it is smaller than the sum of its proper divisors (11563051578).

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

10021311222 is a wasteful number, since it uses less digits than its factorization.

10021311222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128478367.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10021311222 its reverse (22211312001), we get a palindrome (32232623223).

The spelling of 10021311222 in words is "ten billion, twenty-one million, three hundred eleven thousand, two hundred twenty-two".

Divisors: 1 2 3 6 13 26 39 78 128478349 256956698 385435047 770870094 1670218537 3340437074 5010655611 10021311222