131221340414204 has 24 divisors (see below), whose sum is σ = 230006942876256. Its totient is φ = 65505147192000.

The previous prime is 131221340414179. The next prime is 131221340414233. The reversal of 131221340414204 is 402414043122131.

It is a congruent number.

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, 2628107 + ... + 16411874.

It is an arithmetic number, because the mean of its divisors is an integer number (9583622619844).

Almost surely, 2^{131221340414204} is an apocalyptic number.

It is an amenable number.

131221340414204 is a deficient number, since it is larger than the sum of its proper divisors (98785602462052).

131221340414204 is a wasteful number, since it uses less digits than its factorization.

131221340414204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19042757 (or 19042755 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 131221340414204 its reverse (402414043122131), we get a palindrome (533635383536335).

The spelling of 131221340414204 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred forty million, four hundred fourteen thousand, two hundred four".