320021651246121 has 96 divisors (see below), whose sum is σ = 518609803345920. Its totient is φ = 188539188364800.

The previous prime is 320021651246093. The next prime is 320021651246153. The reversal of 320021651246121 is 121642156120023.

320021651246121 is a `hidden beast` number, since 3 + 2 + 0 + 0 + 2 + 16 + 5 + 1 + 24 + 612 + 1 = 666.

It is not a de Polignac number, because 320021651246121 - 2²⁵ = 320021617691689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320021651246321) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 128888241 + ... + 131347713.

It is an arithmetic number, because the mean of its divisors is an integer number (5402185451520).

Almost surely, 2^{320021651246121} is an apocalyptic number.

It is an amenable number.

320021651246121 is a deficient number, since it is larger than the sum of its proper divisors (198588152099799).

320021651246121 is a wasteful number, since it uses less digits than its factorization.

320021651246121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459827 (or 2459824 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 320021651246121 in words is "three hundred twenty trillion, twenty-one billion, six hundred fifty-one million, two hundred forty-six thousand, one hundred twenty-one".