55032220011 has 16 divisors (see below), whose sum is σ = 75940711200. Its totient is φ = 35407077888.

The previous prime is 55032220007. The next prime is 55032220057. The reversal of 55032220011 is 11002223055.

It is not a de Polignac number, because 55032220011 - 2² = 55032220007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55032220011.

It is not an unprimeable number, because it can be changed into a prime (55032220081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53235 + ... + 336003.

It is an arithmetic number, because the mean of its divisors is an integer number (4746294450).

Almost surely, 2^55032220011 is an apocalyptic number.

55032220011 is a deficient number, since it is larger than the sum of its proper divisors (20908491189).

55032220011 is a wasteful number, since it uses less digits than its factorization.

55032220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285038.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 55032220011 its reverse (11002223055), we get a palindrome (66034443066).

The spelling of 55032220011 in words is "fifty-five billion, thirty-two million, two hundred twenty thousand, eleven".