20871200113124 has 6 divisors (see below), whose sum is σ = 36524600197974. Its totient is φ = 10435600056560.

The previous prime is 20871200113123. The next prime is 20871200113151. The reversal of 20871200113124 is 42131100217802.

It can be written as a sum of positive squares in only one way, i.e., 18935117102500 + 1936083010624 = 4351450^2 + 1391432^2 .

It is not an unprimeable number, because it can be changed into a prime (20871200113123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2608900014137 + ... + 2608900014144.

It is an arithmetic number, because the mean of its divisors is an integer number (6087433366329).

Almost surely, 2^{20871200113124} is an apocalyptic number.

It is an amenable number.

20871200113124 is a deficient number, since it is larger than the sum of its proper divisors (15653400084850).

20871200113124 is a wasteful number, since it uses less digits than its factorization.

20871200113124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217800028285 (or 5217800028283 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The spelling of 20871200113124 in words is "twenty trillion, eight hundred seventy-one billion, two hundred million, one hundred thirteen thousand, one hundred twenty-four".