123130100021200 has 60 divisors (see below), whose sum is σ = 298748976936588. Its totient is φ = 48764396032000.

The previous prime is 123130100021177. The next prime is 123130100021231. The reversal of 123130100021200 is 2120001031321.

123130100021200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 4226428765584 + 118903671255616 = 2055828^2 + 10904296^2 .

It is a super-2 number, since 2×123130100021200² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1523846977 + ... + 1523927776.

Almost surely, 2^{123130100021200} is an apocalyptic number.

123130100021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123130100021200 is an abundant number, since it is smaller than the sum of its proper divisors (175618876915388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123130100021200 is a wasteful number, since it uses less digits than its factorization.

123130100021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047774872 (or 3047774861 counting only the distinct ones).

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

Adding to 123130100021200 its reverse (2120001031321), we get a palindrome (125250101052521).

The spelling of 123130100021200 in words is "one hundred twenty-three trillion, one hundred thirty billion, one hundred million, twenty-one thousand, two hundred".