2123120023131 has 4 divisors (see below), whose sum is σ = 2830826697512. Its totient is φ = 1415413348752.

The previous prime is 2123120023093. The next prime is 2123120023163. The reversal of 2123120023131 is 1313200213212.

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

It is not a de Polignac number, because 2123120023131 - 2¹⁵ = 2123119990363 is a prime.

It is a super-2 number, since 2×2123120023131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123120023098 and 2123120023107.

It is not an unprimeable number, because it can be changed into a prime (2123120021131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353853337186 + ... + 353853337191.

It is an arithmetic number, because the mean of its divisors is an integer number (707706674378).

Almost surely, 2^{2123120023131} is an apocalyptic number.

2123120023131 is a deficient number, since it is larger than the sum of its proper divisors (707706674381).

2123120023131 is an equidigital number, since it uses as much as digits as its factorization.

2123120023131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707706674380.

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

Adding to 2123120023131 its reverse (1313200213212), we get a palindrome (3436320236343).

The spelling of 2123120023131 in words is "two trillion, one hundred twenty-three billion, one hundred twenty million, twenty-three thousand, one hundred thirty-one".