210021111122 has 16 divisors (see below), whose sum is σ = 321706883520. Its totient is φ = 102794510832.

The previous prime is 210021111109. The next prime is 210021111137. The reversal of 210021111122 is 221111120012.

It is a junction number, because it is equal to n+sod(n) for n = 210021111097 and 210021111106.

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, 2210108 + ... + 2303175.

It is an arithmetic number, because the mean of its divisors is an integer number (20106680220).

Almost surely, 2^210021111122 is an apocalyptic number.

210021111122 is a deficient number, since it is larger than the sum of its proper divisors (111685772398).

210021111122 is a wasteful number, since it uses less digits than its factorization.

210021111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513777.

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

Adding to 210021111122 its reverse (221111120012), we get a palindrome (431132231134).

The spelling of 210021111122 in words is "two hundred ten billion, twenty-one million, one hundred eleven thousand, one hundred twenty-two".