2212051001656 has 16 divisors (see below), whose sum is σ = 4225852150200. Its totient is φ = 1085157094944.

The previous prime is 2212051001647. The next prime is 2212051001701. The reversal of 2212051001656 is 6561001502122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2608550286 + ... + 2608551133.

Almost surely, 2^{2212051001656} is an apocalyptic number.

It is an amenable number.

2212051001656 is a deficient number, since it is larger than the sum of its proper divisors (2013801148544).

2212051001656 is a wasteful number, since it uses less digits than its factorization.

2212051001656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217101478 (or 5217101474 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 2212051001656 its reverse (6561001502122), we get a palindrome (8773052503778).

The spelling of 2212051001656 in words is "two trillion, two hundred twelve billion, fifty-one million, one thousand, six hundred fifty-six".