12421550545131 has 64 divisors (see below), whose sum is σ = 20736115248128. Its totient is φ = 6439325257728.

The previous prime is 12421550545123. The next prime is 12421550545139. The reversal of 12421550545131 is 13154505512421.

It is an interprime number because it is at equal distance from previous prime (12421550545123) and next prime (12421550545139).

It is not a de Polignac number, because 12421550545131 - 2³ = 12421550545123 is a prime.

It is a super-2 number, since 2×12421550545131² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 12421550545131.

It is not an unprimeable number, because it can be changed into a prime (12421550545139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7135815 + ... + 8704191.

It is an arithmetic number, because the mean of its divisors is an integer number (324001800752).

Almost surely, 2^{12421550545131} is an apocalyptic number.

12421550545131 is a deficient number, since it is larger than the sum of its proper divisors (8314564702997).

12421550545131 is a wasteful number, since it uses less digits than its factorization.

12421550545131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568900.

The product of its (nonzero) digits is 120000, while the sum is 39.

The spelling of 12421550545131 in words is "twelve trillion, four hundred twenty-one billion, five hundred fifty million, five hundred forty-five thousand, one hundred thirty-one".