131021012421115 has 16 divisors (see below), whose sum is σ = 158115978411552. Its totient is φ = 104224126322944.

The previous prime is 131021012421107. The next prime is 131021012421161. The reversal of 131021012421115 is 511124210120131.

It is a cyclic number.

It is not a de Polignac number, because 131021012421115 - 2³ = 131021012421107 is a prime.

It is a super-2 number, since 2×131021012421115² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131021012421115.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71515114 + ... + 73324303.

It is an arithmetic number, because the mean of its divisors is an integer number (9882248650722).

Almost surely, 2^{131021012421115} is an apocalyptic number.

131021012421115 is a deficient number, since it is larger than the sum of its proper divisors (27094965990437).

131021012421115 is a wasteful number, since it uses less digits than its factorization.

131021012421115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144840446.

The product of its (nonzero) digits is 480, while the sum is 25.

Adding to 131021012421115 its reverse (511124210120131), we get a palindrome (642145222541246).

The spelling of 131021012421115 in words is "one hundred thirty-one trillion, twenty-one billion, twelve million, four hundred twenty-one thousand, one hundred fifteen".