20312122 has 16 divisors (see below), whose sum is σ = 31995360. Its totient is φ = 9657648.

The previous prime is 20312113. The next prime is 20312137. The reversal of 20312122 is 22121302.

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 7 ways as a sum of consecutive naturals, for example, 1273 + ... + 6499.

It is an arithmetic number, because the mean of its divisors is an integer number (1999710).

Almost surely, 2^20312122 is an apocalyptic number.

20312122 is a deficient number, since it is larger than the sum of its proper divisors (11683238).

20312122 is a wasteful number, since it uses less digits than its factorization.

20312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20312122 is about 4506.8971588001. The cubic root of 20312122 is about 272.8465282563.

Adding to 20312122 its reverse (22121302), we get a palindrome (42433424).

The spelling of 20312122 in words is "twenty million, three hundred twelve thousand, one hundred twenty-two".