20322012 has 12 divisors (see below), whose sum is σ = 47418056. Its totient is φ = 6774000.

The previous prime is 20321981. The next prime is 20322017. The reversal of 20322012 is 21022302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1693501 = 20322012 / (2 + 0 + 3 + 2 + 2 + 0 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322017) 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 3 ways as a sum of consecutive naturals, for example, 846739 + ... + 846762.

Almost surely, 2^20322012 is an apocalyptic number.

It is an amenable number.

20322012 is an abundant number, since it is smaller than the sum of its proper divisors (27096044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20322012 is a wasteful number, since it uses less digits than its factorization.

20322012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693508 (or 1693506 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20322012 is about 4507.9942324719. The cubic root of 20322012 is about 272.8908041871.

Adding to 20322012 its reverse (21022302), we get a palindrome (41344314).

The spelling of 20322012 in words is "twenty million, three hundred twenty-two thousand, twelve".