20210122111110 has 32 divisors (see below), whose sum is σ = 48504438869760. Its totient is φ = 5389349695968.

The previous prime is 20210122111103. The next prime is 20210122111147. The reversal of 20210122111110 is 1111122101202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20210122111110.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11785981 + ... + 13391399.

It is an arithmetic number, because the mean of its divisors is an integer number (1515763714680).

Almost surely, 2^{20210122111110} is an apocalyptic number.

20210122111110 is an abundant number, since it is smaller than the sum of its proper divisors (28294316758650).

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

20210122111110 is a wasteful number, since it uses less digits than its factorization.

20210122111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025052.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20210122111110 its reverse (1111122101202), we get a palindrome (21321244212312).

The spelling of 20210122111110 in words is "twenty trillion, two hundred ten billion, one hundred twenty-two million, one hundred eleven thousand, one hundred ten".