131222400123 has 8 divisors (see below), whose sum is σ = 175064870736. Its totient is φ = 87430764800.

The previous prime is 131222400079. The next prime is 131222400139. The reversal of 131222400123 is 321004222131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131222400123 - 2¹⁴ = 131222383739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131222400123.

It is not an unprimeable number, because it can be changed into a prime (131222400163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12702798 + ... + 12713123.

It is an arithmetic number, because the mean of its divisors is an integer number (21883108842).

Almost surely, 2^131222400123 is an apocalyptic number.

131222400123 is a deficient number, since it is larger than the sum of its proper divisors (43842470613).

131222400123 is a wasteful number, since it uses less digits than its factorization.

131222400123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25417645.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 131222400123 its reverse (321004222131), we get a palindrome (452226622254).

The spelling of 131222400123 in words is "one hundred thirty-one billion, two hundred twenty-two million, four hundred thousand, one hundred twenty-three".