38656222121 has 16 divisors (see below), whose sum is σ = 42535680000. Its totient is φ = 34838586000.

The previous prime is 38656222109. The next prime is 38656222127. The reversal of 38656222121 is 12122265683.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 38656222121 - 2³⁰ = 37582480297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38656222127) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 805520 + ... + 852158.

It is an arithmetic number, because the mean of its divisors is an integer number (2658480000).

Almost surely, 2^38656222121 is an apocalyptic number.

It is an amenable number.

38656222121 is a deficient number, since it is larger than the sum of its proper divisors (3879457879).

38656222121 is a wasteful number, since it uses less digits than its factorization.

38656222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47300.

The product of its digits is 69120, while the sum is 38.

The spelling of 38656222121 in words is "thirty-eight billion, six hundred fifty-six million, two hundred twenty-two thousand, one hundred twenty-one".