21102210122110 has 16 divisors (see below), whose sum is σ = 40905822698496. Its totient is φ = 7791585275808.

The previous prime is 21102210122093. The next prime is 21102210122111. The reversal of 21102210122110 is 1122101220112.

It is a super-2 number, since 2×21102210122110² (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 (21102210122111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81162346494 + ... + 81162346753.

It is an arithmetic number, because the mean of its divisors is an integer number (2556613918656).

Almost surely, 2^{21102210122110} is an apocalyptic number.

21102210122110 is a deficient number, since it is larger than the sum of its proper divisors (19803612576386).

21102210122110 is a wasteful number, since it uses less digits than its factorization.

21102210122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162324693267.

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

Adding to 21102210122110 its reverse (1122101220112), we get a palindrome (22224311342222).

The spelling of 21102210122110 in words is "twenty-one trillion, one hundred two billion, two hundred ten million, one hundred twenty-two thousand, one hundred ten".