2122336656 has 60 divisors (see below), whose sum is σ = 6479562960. Its totient is φ = 643131840.

The previous prime is 2122336649. The next prime is 2122336673. The reversal of 2122336656 is 6566332212.

2122336656 is a `hidden beast` number, since 21 + 223 + 366 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2122336656.

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, 668346 + ... + 671513.

It is an arithmetic number, because the mean of its divisors is an integer number (107992716).

Almost surely, 2^2122336656 is an apocalyptic number.

It is an amenable number.

2122336656 is an abundant number, since it is smaller than the sum of its proper divisors (4357226304).

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

2122336656 is a wasteful number, since it uses less digits than its factorization.

2122336656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339884 (or 1339875 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 2122336656 is about 46068.8252075088. The cubic root of 2122336656 is about 1285.1034564718.

Adding to 2122336656 its reverse (6566332212), we get a palindrome (8688668868).

The spelling of 2122336656 in words is "two billion, one hundred twenty-two million, three hundred thirty-six thousand, six hundred fifty-six".