131212200122 has 8 divisors (see below), whose sum is σ = 197072918676. Its totient is φ = 65521227232.

The previous prime is 131212200109. The next prime is 131212200131. The reversal of 131212200122 is 221002212131.

It can be written as a sum of positive squares in 2 ways, for example, as 129851401801 + 1360798321 = 360349^2 + 36889^2 .

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 131212200122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42434483 + ... + 42437574.

Almost surely, 2^131212200122 is an apocalyptic number.

131212200122 is a deficient number, since it is larger than the sum of its proper divisors (65860718554).

131212200122 is an equidigital number, since it uses as much as digits as its factorization.

131212200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84872832.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 131212200122 its reverse (221002212131), we get a palindrome (352214412253).

The spelling of 131212200122 in words is "one hundred thirty-one billion, two hundred twelve million, two hundred thousand, one hundred twenty-two".