20013121241244 has 72 divisors (see below), whose sum is σ = 50650667488512. Its totient is φ = 6662873337120.

The previous prime is 20013121241143. The next prime is 20013121241257. The reversal of 20013121241244 is 44214212131002.

20013121241244 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 31 + 212 + 412 + 4 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 462271239 + ... + 462314529.

It is an arithmetic number, because the mean of its divisors is an integer number (703481492896).

Almost surely, 2^{20013121241244} is an apocalyptic number.

It is an amenable number.

20013121241244 is an abundant number, since it is smaller than the sum of its proper divisors (30637546247268).

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

20013121241244 is a wasteful number, since it uses less digits than its factorization.

20013121241244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58727 (or 58722 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 20013121241244 its reverse (44214212131002), we get a palindrome (64227333372246).

The spelling of 20013121241244 in words is "twenty trillion, thirteen billion, one hundred twenty-one million, two hundred forty-one thousand, two hundred forty-four".