2013123102123 has 32 divisors (see below), whose sum is σ = 3082137795072. Its totient is φ = 1144920787200.

The previous prime is 2013123102103. The next prime is 2013123102157. The reversal of 2013123102123 is 3212013213102.

It is not a de Polignac number, because 2013123102123 - 2⁵ = 2013123102091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2013123102123.

It is not an unprimeable number, because it can be changed into a prime (2013123102103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4467468 + ... + 4897398.

It is an arithmetic number, because the mean of its divisors is an integer number (96316806096).

Almost surely, 2^{2013123102123} is an apocalyptic number.

2013123102123 is a deficient number, since it is larger than the sum of its proper divisors (1069014692949).

2013123102123 is a wasteful number, since it uses less digits than its factorization.

2013123102123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430995.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2013123102123 its reverse (3212013213102), we get a palindrome (5225136315225).

The spelling of 2013123102123 in words is "two trillion, thirteen billion, one hundred twenty-three million, one hundred two thousand, one hundred twenty-three".