21110120122210 has 32 divisors (see below), whose sum is σ = 43436701204992. Its totient is φ = 7236060740160.

The previous prime is 21110120122187. The next prime is 21110120122211. The reversal of 21110120122210 is 1222102101112.

It is not an unprimeable number, because it can be changed into a prime (21110120122211) 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, 35005777 + ... + 35603716.

It is an arithmetic number, because the mean of its divisors is an integer number (1357396912656).

Almost surely, 2^{21110120122210} is an apocalyptic number.

21110120122210 is an abundant number, since it is smaller than the sum of its proper divisors (22326581082782).

21110120122210 is a wasteful number, since it uses less digits than its factorization.

21110120122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70613778.

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

Adding to 21110120122210 its reverse (1222102101112), we get a palindrome (22332222223322).

The spelling of 21110120122210 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty million, one hundred twenty-two thousand, two hundred ten".