131020223122 has 8 divisors (see below), whose sum is σ = 196563770172. Its totient is φ = 65498966400.

The previous prime is 131020223029. The next prime is 131020223129. The reversal of 131020223122 is 221322020131.

It can be written as a sum of positive squares in 2 ways, for example, as 129419343001 + 1600880121 = 359749^2 + 40011^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 131020223122.

It is not an unprimeable number, because it can be changed into a prime (131020223129) 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, 5557879 + ... + 5581402.

Almost surely, 2^131020223122 is an apocalyptic number.

131020223122 is a deficient number, since it is larger than the sum of its proper divisors (65543547050).

131020223122 is a wasteful number, since it uses less digits than its factorization.

131020223122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11145164.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 131020223122 its reverse (221322020131), we get a palindrome (352342243253).

The spelling of 131020223122 in words is "one hundred thirty-one billion, twenty million, two hundred twenty-three thousand, one hundred twenty-two".