21010122012110 has 64 divisors (see below), whose sum is σ = 47164872084480. Its totient is φ = 6546542238720.

The previous prime is 21010122012031. The next prime is 21010122012133. The reversal of 21010122012110 is 1121022101012.

It is a super-3 number, since 3×21010122012110³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

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, 1864994 + ... + 6745253.

It is an arithmetic number, because the mean of its divisors is an integer number (736951126320).

Almost surely, 2^{21010122012110} is an apocalyptic number.

21010122012110 is an abundant number, since it is smaller than the sum of its proper divisors (26154750072370).

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

21010122012110 is a wasteful number, since it uses less digits than its factorization.

21010122012110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8613441.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21010122012110 its reverse (1121022101012), we get a palindrome (22131144113122).

The spelling of 21010122012110 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, twelve thousand, one hundred ten".