20010123013 has 4 divisors (see below), whose sum is σ = 20020774240. Its totient is φ = 19999471788.

The previous prime is 20010122933. The next prime is 20010123031. The reversal of 20010123013 is 31032101002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20010123013 - 2⁹ = 20010122501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010122984 and 20010123002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010121013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5322795 + ... + 5326552.

It is an arithmetic number, because the mean of its divisors is an integer number (5005193560).

Almost surely, 2^20010123013 is an apocalyptic number.

It is an amenable number.

20010123013 is a deficient number, since it is larger than the sum of its proper divisors (10651227).

20010123013 is a wasteful number, since it uses less digits than its factorization.

20010123013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10651226.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20010123013 its reverse (31032101002), we get a palindrome (51042224015).

The spelling of 20010123013 in words is "twenty billion, ten million, one hundred twenty-three thousand, thirteen".