210221121122 has 16 divisors (see below), whose sum is σ = 317011359744. Its totient is φ = 104550768000.

The previous prime is 210221121059. The next prime is 210221121137. The reversal of 210221121122 is 221121122012.

It is a self number, because there is not a number n which added to its sum of digits gives 210221121122.

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, 6279047 + ... + 6312437.

It is an arithmetic number, because the mean of its divisors is an integer number (19813209984).

Almost surely, 2^210221121122 is an apocalyptic number.

210221121122 is a deficient number, since it is larger than the sum of its proper divisors (106790238622).

210221121122 is a wasteful number, since it uses less digits than its factorization.

210221121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50065.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210221121122 its reverse (221121122012), we get a palindrome (431342243134).

The spelling of 210221121122 in words is "two hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".