10012311220 has 12 divisors (see below), whose sum is σ = 21025853604. Its totient is φ = 4004924480.

The previous prime is 10012311209. The next prime is 10012311241. The reversal of 10012311220 is 2211321001.

It can be written as a sum of positive squares in 2 ways, for example, as 3043066896 + 6969244324 = 55164^2 + 83482^2 .

It is a super-2 number, since 2×10012311220² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10012311220.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 250307761 + ... + 250307800.

It is an arithmetic number, because the mean of its divisors is an integer number (1752154467).

Almost surely, 2^10012311220 is an apocalyptic number.

10012311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10012311220 is an abundant number, since it is smaller than the sum of its proper divisors (11013542384).

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

10012311220 is a wasteful number, since it uses less digits than its factorization.

10012311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500615570 (or 500615568 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10012311220 its reverse (2211321001), we get a palindrome (12223632221).

The spelling of 10012311220 in words is "ten billion, twelve million, three hundred eleven thousand, two hundred twenty".