56722221552012 has 48 divisors (see below), whose sum is σ = 132465032501760. Its totient is φ = 18891239345152.

The previous prime is 56722221552011. The next prime is 56722221552067. The reversal of 56722221552012 is 21025512222765.

It is not an unprimeable number, because it can be changed into a prime (56722221552011) 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, 681658513 + ... + 681741719.

It is an arithmetic number, because the mean of its divisors is an integer number (2759688177120).

Almost surely, 2^{56722221552012} is an apocalyptic number.

It is an amenable number.

56722221552012 is an abundant number, since it is smaller than the sum of its proper divisors (75742810949748).

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

56722221552012 is a wasteful number, since it uses less digits than its factorization.

56722221552012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131110 (or 131108 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

Adding to 56722221552012 its reverse (21025512222765), we get a palindrome (77747733774777).

The spelling of 56722221552012 in words is "fifty-six trillion, seven hundred twenty-two billion, two hundred twenty-one million, five hundred fifty-two thousand, twelve".