21121101110010 has 32 divisors (see below), whose sum is σ = 55298882907072. Its totient is φ = 5120266935680.

The previous prime is 21121101109951. The next prime is 21121101110059. The reversal of 21121101110010 is 1001110112112.

It is a super-2 number, since 2×21121101110010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32001668019 + ... + 32001668678.

It is an arithmetic number, because the mean of its divisors is an integer number (1728090090846).

Almost surely, 2^{21121101110010} is an apocalyptic number.

21121101110010 is an abundant number, since it is smaller than the sum of its proper divisors (34177781797062).

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

21121101110010 is a wasteful number, since it uses less digits than its factorization.

21121101110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64003336718.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 21121101110010 its reverse (1001110112112), we get a palindrome (22122211222122).

The spelling of 21121101110010 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred one million, one hundred ten thousand, ten".