21102111122 has 16 divisors (see below), whose sum is σ = 32697561600. Its totient is φ = 10203409920.

The previous prime is 21102111119. The next prime is 21102111137. The reversal of 21102111122 is 22111120112.

It is a junction number, because it is equal to n+sod(n) for n = 21102111097 and 21102111106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33422 + ... + 208137.

It is an arithmetic number, because the mean of its divisors is an integer number (2043597600).

Almost surely, 2^21102111122 is an apocalyptic number.

21102111122 is a deficient number, since it is larger than the sum of its proper divisors (11595450478).

21102111122 is a wasteful number, since it uses less digits than its factorization.

21102111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243001.

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

Adding to 21102111122 its reverse (22111120112), we get a palindrome (43213231234).

The spelling of 21102111122 in words is "twenty-one billion, one hundred two million, one hundred eleven thousand, one hundred twenty-two".