123000201021131 has 4 divisors (see below), whose sum is σ = 140571658309872. Its totient is φ = 105428743732392.

The previous prime is 123000201021119. The next prime is 123000201021133. The reversal of 123000201021131 is 131120102000321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123000201021131 is a prime.

It is a super-2 number, since 2×123000201021131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123000201021133) 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, 8785728644360 + ... + 8785728644373.

It is an arithmetic number, because the mean of its divisors is an integer number (35142914577468).

Almost surely, 2^{123000201021131} is an apocalyptic number.

123000201021131 is a deficient number, since it is larger than the sum of its proper divisors (17571457288741).

123000201021131 is an equidigital number, since it uses as much as digits as its factorization.

123000201021131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17571457288740.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123000201021131 its reverse (131120102000321), we get a palindrome (254120303021452).

The spelling of 123000201021131 in words is "one hundred twenty-three trillion, two hundred one million, twenty-one thousand, one hundred thirty-one".