21113001122 has 16 divisors (see below), whose sum is σ = 32001862200. Its totient is φ = 10445967360.

The previous prime is 21113001113. The next prime is 21113001149. The reversal of 21113001122 is 22110031112.

It can be written as a sum of positive squares in 4 ways, for example, as 21100758121 + 12243001 = 145261^2 + 3499^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21113001097 and 21113001106.

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, 104672 + ... + 230612.

Almost surely, 2^21113001122 is an apocalyptic number.

21113001122 is a deficient number, since it is larger than the sum of its proper divisors (10888861078).

21113001122 is a wasteful number, since it uses less digits than its factorization.

21113001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126821.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21113001122 its reverse (22110031112), we get a palindrome (43223032234).

The spelling of 21113001122 in words is "twenty-one billion, one hundred thirteen million, one thousand, one hundred twenty-two".