20000012113021 has 16 divisors (see below), whose sum is σ = 20512499356800. Its totient is φ = 19495055070400.

The previous prime is 20000012113009. The next prime is 20000012113033. The reversal of 20000012113021 is 12031121000002.

It is an interprime number because it is at equal distance from previous prime (20000012113009) and next prime (20000012113033).

It is a cyclic number.

It is not a de Polignac number, because 20000012113021 - 2⁷ = 20000012112893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000012112992 and 20000012113010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000012113121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1494886 + ... + 6498823.

It is an arithmetic number, because the mean of its divisors is an integer number (1282031209800).

Almost surely, 2^{20000012113021} is an apocalyptic number.

It is an amenable number.

20000012113021 is a deficient number, since it is larger than the sum of its proper divisors (512487243779).

20000012113021 is a wasteful number, since it uses less digits than its factorization.

20000012113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7994180.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20000012113021 its reverse (12031121000002), we get a palindrome (32031133113023).

The spelling of 20000012113021 in words is "twenty trillion, twelve million, one hundred thirteen thousand, twenty-one".