221552222255122 has 24 divisors (see below), whose sum is σ = 386773957283868. Its totient is φ = 94781699358720.

The previous prime is 221552222255057. The next prime is 221552222255167.

221552222255122 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 162946475972401 + 58605746282721 = 12765049^2 + 7655439^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26926615023 + ... + 26926623250.

Almost surely, 2^{221552222255122} is an apocalyptic number.

221552222255122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221552222255122 is a deficient number, since it is larger than the sum of its proper divisors (165221735028746).

221552222255122 is a wasteful number, since it uses less digits than its factorization.

221552222255122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53853238314 (or 53853238303 counting only the distinct ones).

The product of its digits is 320000, while the sum is 40.

The spelling of 221552222255122 in words is "two hundred twenty-one trillion, five hundred fifty-two billion, two hundred twenty-two million, two hundred fifty-five thousand, one hundred twenty-two".