20364121 has 4 divisors (see below), whose sum is σ = 20387200. Its totient is φ = 20341044.

The previous prime is 20364109. The next prime is 20364139. The reversal of 20364121 is 12146302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20364121 - 2⁵ = 20364089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20364101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10161 + ... + 11998.

It is an arithmetic number, because the mean of its divisors is an integer number (5096800).

Almost surely, 2^20364121 is an apocalyptic number.

It is an amenable number.

20364121 is a deficient number, since it is larger than the sum of its proper divisors (23079).

20364121 is an equidigital number, since it uses as much as digits as its factorization.

20364121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23078.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20364121 is about 4512.6622962504. The cubic root of 20364121 is about 273.0791587506.

The spelling of 20364121 in words is "twenty million, three hundred sixty-four thousand, one hundred twenty-one".