10012111220 has 24 divisors (see below), whose sum is σ = 21080925600. Its totient is φ = 3994274592.

The previous prime is 10012111211. The next prime is 10012111247. The reversal of 10012111220 is 2211121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652850 + ... + 668009.

It is an arithmetic number, because the mean of its divisors is an integer number (878371900).

Almost surely, 2^10012111220 is an apocalyptic number.

10012111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10012111220 is an abundant number, since it is smaller than the sum of its proper divisors (11068814380).

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

10012111220 is a wasteful number, since it uses less digits than its factorization.

10012111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321247 (or 1321245 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10012111220 its reverse (2211121001), we get a palindrome (12223232221).

The spelling of 10012111220 in words is "ten billion, twelve million, one hundred eleven thousand, two hundred twenty".