20123011020013 has 12 divisors (see below), whose sum is σ = 23319651654432. Its totient is φ = 17217549533120.

The previous prime is 20123011019959. The next prime is 20123011020023. The reversal of 20123011020013 is 31002011032102.

It is not a de Polignac number, because 20123011020013 - 2²⁵ = 20122977465581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123011020023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3164987545 + ... + 3164993902.

It is an arithmetic number, because the mean of its divisors is an integer number (1943304304536).

Almost surely, 2^{20123011020013} is an apocalyptic number.

It is an amenable number.

20123011020013 is a deficient number, since it is larger than the sum of its proper divisors (3196640634419).

20123011020013 is a wasteful number, since it uses less digits than its factorization.

20123011020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6329981492 (or 6329981475 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20123011020013 its reverse (31002011032102), we get a palindrome (51125022052115).

The spelling of 20123011020013 in words is "twenty trillion, one hundred twenty-three billion, eleven million, twenty thousand, thirteen".