20100122013 has 4 divisors (see below), whose sum is σ = 26800162688. Its totient is φ = 13400081340.

The previous prime is 20100121997. The next prime is 20100122051. The reversal of 20100122013 is 31022100102.

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 not a de Polignac number, because 20100122013 - 2⁴ = 20100121997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20100122013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100122083) 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, 3350020333 + ... + 3350020338.

It is an arithmetic number, because the mean of its divisors is an integer number (6700040672).

Almost surely, 2^20100122013 is an apocalyptic number.

It is an amenable number.

20100122013 is a deficient number, since it is larger than the sum of its proper divisors (6700040675).

20100122013 is an equidigital number, since it uses as much as digits as its factorization.

20100122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700040674.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20100122013 its reverse (31022100102), we get a palindrome (51122222115).

The spelling of 20100122013 in words is "twenty billion, one hundred million, one hundred twenty-two thousand, thirteen".