55032220012 has 48 divisors (see below), whose sum is σ = 120097635840. Its totient is φ = 21436243200.

The previous prime is 55032220007. The next prime is 55032220057. The reversal of 55032220012 is 21002223055.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1524937 + ... + 1560607.

It is an arithmetic number, because the mean of its divisors is an integer number (2502034080).

Almost surely, 2^55032220012 is an apocalyptic number.

It is an amenable number.

55032220012 is an abundant number, since it is smaller than the sum of its proper divisors (65065415828).

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

55032220012 is a wasteful number, since it uses less digits than its factorization.

55032220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40702 (or 40700 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 55032220012 its reverse (21002223055), we get a palindrome (76034443067).

The spelling of 55032220012 in words is "fifty-five billion, thirty-two million, two hundred twenty thousand, twelve".