20926121 has 8 divisors (see below), whose sum is σ = 21155904. Its totient is φ = 20698000.

The previous prime is 20926093. The next prime is 20926153. The reversal of 20926121 is 12162902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20926121 - 2⁶ = 20926057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20926181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65855 + ... + 66171.

It is an arithmetic number, because the mean of its divisors is an integer number (2644488).

Almost surely, 2^20926121 is an apocalyptic number.

It is an amenable number.

20926121 is a deficient number, since it is larger than the sum of its proper divisors (229783).

20926121 is a wasteful number, since it uses less digits than its factorization.

20926121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 20926121 is about 4574.5077330790. The cubic root of 20926121 is about 275.5685032709.

The spelling of 20926121 in words is "twenty million, nine hundred twenty-six thousand, one hundred twenty-one".