131222113123 has 4 divisors (see below), whose sum is σ = 132448488120. Its totient is φ = 129995738128.

The previous prime is 131222113069. The next prime is 131222113159. The reversal of 131222113123 is 321311222131.

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

It is a cyclic number.

It is not a de Polignac number, because 131222113123 - 2⁹ = 131222112611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131222113094 and 131222113103.

It is not an unprimeable number, because it can be changed into a prime (131222119123) 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, 613187338 + ... + 613187551.

It is an arithmetic number, because the mean of its divisors is an integer number (33112122030).

Almost surely, 2^131222113123 is an apocalyptic number.

131222113123 is a deficient number, since it is larger than the sum of its proper divisors (1226374997).

131222113123 is a wasteful number, since it uses less digits than its factorization.

131222113123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226374996.

The product of its digits is 432, while the sum is 22.

Adding to 131222113123 its reverse (321311222131), we get a palindrome (452533335254).

The spelling of 131222113123 in words is "one hundred thirty-one billion, two hundred twenty-two million, one hundred thirteen thousand, one hundred twenty-three".