21122111012110 has 32 divisors (see below), whose sum is σ = 39332263616640. Its totient is φ = 8157207061248.

The previous prime is 21122111012083. The next prime is 21122111012117. The reversal of 21122111012110 is 1121011122112.

It is a super-2 number, since 2×21122111012110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122111012117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6709179 + ... + 9341161.

It is an arithmetic number, because the mean of its divisors is an integer number (1229133238020).

Almost surely, 2^{21122111012110} is an apocalyptic number.

21122111012110 is a deficient number, since it is larger than the sum of its proper divisors (18210152604530).

21122111012110 is a wasteful number, since it uses less digits than its factorization.

21122111012110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659692.

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

Adding to 21122111012110 its reverse (1121011122112), we get a palindrome (22243122134222).

The spelling of 21122111012110 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred eleven million, twelve thousand, one hundred ten".