21102211122 has 32 divisors (see below), whose sum is σ = 42664406400. Its totient is φ = 6957799680.

The previous prime is 21102211087. The next prime is 21102211139. The reversal of 21102211122 is 22111220112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166483 + ... + 264425.

It is an arithmetic number, because the mean of its divisors is an integer number (1333262700).

Almost surely, 2^21102211122 is an apocalyptic number.

21102211122 is an abundant number, since it is smaller than the sum of its proper divisors (21562195278).

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

21102211122 is a wasteful number, since it uses less digits than its factorization.

21102211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98338.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21102211122 its reverse (22111220112), we get a palindrome (43213431234).

The spelling of 21102211122 in words is "twenty-one billion, one hundred two million, two hundred eleven thousand, one hundred twenty-two".