55222226221632 has 56 divisors (see below), whose sum is σ = 146109753471552. Its totient is φ = 18407289484800.

The previous prime is 55222226221609. The next prime is 55222226221807. The reversal of 55222226221632 is 23612262222255.

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, 31760782 + ... + 33454322.

Almost surely, 2^{55222226221632} is an apocalyptic number.

It is an amenable number.

55222226221632 is an abundant number, since it is smaller than the sum of its proper divisors (90887527249920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55222226221632 is a wasteful number, since it uses less digits than its factorization.

55222226221632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863387 (or 1863377 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

Adding to 55222226221632 its reverse (23612262222255), we get a palindrome (78834488443887).

The spelling of 55222226221632 in words is "fifty-five trillion, two hundred twenty-two billion, two hundred twenty-six million, two hundred twenty-one thousand, six hundred thirty-two".