20113012 has 12 divisors (see below), whose sum is σ = 35263620. Its totient is φ = 10037696.

The previous prime is 20112997. The next prime is 20113013. The reversal of 20113012 is 21031102.

It can be written as a sum of positive squares in 2 ways, for example, as 13942756 + 6170256 = 3734^2 + 2484^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20113012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113013) 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, 2143 + ... + 6694.

It is an arithmetic number, because the mean of its divisors is an integer number (2938635).

Almost surely, 2^20113012 is an apocalyptic number.

It is an amenable number.

20113012 is a deficient number, since it is larger than the sum of its proper divisors (15150608).

20113012 is a wasteful number, since it uses less digits than its factorization.

20113012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9410 (or 9408 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 20113012 is about 4484.7532819543. The cubic root of 20113012 is about 271.9520712840.

Adding to 20113012 its reverse (21031102), we get a palindrome (41144114).

The spelling of 20113012 in words is "twenty million, one hundred thirteen thousand, twelve".