21112120022110 has 64 divisors (see below), whose sum is σ = 43118257089600. Its totient is φ = 7378235384832.

The previous prime is 21112120022083. The next prime is 21112120022137. The reversal of 21112120022110 is 1122002121112.

It is an interprime number because it is at equal distance from previous prime (21112120022083) and next prime (21112120022137).

It is a super-2 number, since 2×21112120022110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1186225 + ... + 6605404.

It is an arithmetic number, because the mean of its divisors is an integer number (673722767025).

Almost surely, 2^{21112120022110} is an apocalyptic number.

21112120022110 is an abundant number, since it is smaller than the sum of its proper divisors (22006137067490).

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

21112120022110 is a wasteful number, since it uses less digits than its factorization.

21112120022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7792765.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21112120022110 its reverse (1122002121112), we get a palindrome (22234122143222).

The spelling of 21112120022110 in words is "twenty-one trillion, one hundred twelve billion, one hundred twenty million, twenty-two thousand, one hundred ten".