221522225122 has 64 divisors (see below), whose sum is σ = 384572707200. Its totient is φ = 94745710080.

The previous prime is 221522225087. The next prime is 221522225129.

221522225122 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (221522225129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12528504 + ... + 12546172.

It is an arithmetic number, because the mean of its divisors is an integer number (6008948550).

Almost surely, 2^221522225122 is an apocalyptic number.

221522225122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221522225122 is a deficient number, since it is larger than the sum of its proper divisors (163050482078).

221522225122 is a wasteful number, since it uses less digits than its factorization.

221522225122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18211.

The product of its digits is 6400, while the sum is 28.

It can be divided in two parts, 221522 and 225122, that added together give a palindrome (446644).

The spelling of 221522225122 in words is "two hundred twenty-one billion, five hundred twenty-two million, two hundred twenty-five thousand, one hundred twenty-two".