12021435031995 has 12 divisors (see below), whose sum is σ = 20837154055536. Its totient is φ = 6411432017040.

The previous prime is 12021435031943. The next prime is 12021435031997. The reversal of 12021435031995 is 59913053412021.

12021435031995 is a `hidden beast` number, since 1 + 2 + 0 + 2 + 1 + 43 + 503 + 19 + 95 = 666.

It is not a de Polignac number, because 12021435031995 - 2¹⁵ = 12021434999227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 267143000711 = 12021435031995 / (1 + 2 + 0 + 2 + 1 + 4 + 3 + 5 + 0 + 3 + 1 + 9 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 12021435031995.

It is not an unprimeable number, because it can be changed into a prime (12021435031997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133571500311 + ... + 133571500400.

It is an arithmetic number, because the mean of its divisors is an integer number (1736429504628).

Almost surely, 2^{12021435031995} is an apocalyptic number.

12021435031995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12021435031995 is a deficient number, since it is larger than the sum of its proper divisors (8815719023541).

12021435031995 is a wasteful number, since it uses less digits than its factorization.

12021435031995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267143000722 (or 267143000719 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 12021435031995 in words is "twelve trillion, twenty-one billion, four hundred thirty-five million, thirty-one thousand, nine hundred ninety-five".