131212122 has 16 divisors (see below), whose sum is σ = 264097632. Its totient is φ = 43458480.

The previous prime is 131212111. The next prime is 131212183. The reversal of 131212122 is 221212131.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68704 + ... + 70587.

It is an arithmetic number, because the mean of its divisors is an integer number (16506102).

Almost surely, 2^131212122 is an apocalyptic number.

131212122 is an abundant number, since it is smaller than the sum of its proper divisors (132885510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131212122 is a wasteful number, since it uses less digits than its factorization.

131212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139453.

The product of its digits is 48, while the sum is 15.

The square root of 131212122 is about 11454.7859866520. The cubic root of 131212122 is about 508.1492860070.

Adding to 131212122 its reverse (221212131), we get a palindrome (352424253).

Subtracting 131212122 from its reverse (221212131), we obtain a palindrome (90000009).

The spelling of 131212122 in words is "one hundred thirty-one million, two hundred twelve thousand, one hundred twenty-two".