131213101121224 has 8 divisors (see below), whose sum is σ = 246024564602310. Its totient is φ = 65606550560608.

The previous prime is 131213101121071. The next prime is 131213101121287. The reversal of 131213101121224 is 422121101312131.

It can be written as a sum of positive squares in only one way, i.e., 82002623580900 + 49210477540324 = 9055530^2 + 7015018^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8200818820069 + ... + 8200818820084.

Almost surely, 2^{131213101121224} is an apocalyptic number.

It is an amenable number.

131213101121224 is a deficient number, since it is larger than the sum of its proper divisors (114811463481086).

131213101121224 is a wasteful number, since it uses less digits than its factorization.

131213101121224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16401637640159 (or 16401637640155 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 131213101121224 its reverse (422121101312131), we get a palindrome (553334202433355).

The spelling of 131213101121224 in words is "one hundred thirty-one trillion, two hundred thirteen billion, one hundred one million, one hundred twenty-one thousand, two hundred twenty-four".