12021564250045 has 16 divisors (see below), whose sum is σ = 16486803744768. Its totient is φ = 8243314813440.

The previous prime is 12021564250019. The next prime is 12021564250103. The reversal of 12021564250045 is 54005246512021.

It is not a de Polignac number, because 12021564250045 - 2²³ = 12021555861437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021564249986 and 12021564250013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6719140 + ... + 8318050.

It is an arithmetic number, because the mean of its divisors is an integer number (1030425234048).

Almost surely, 2^{12021564250045} is an apocalyptic number.

It is an amenable number.

12021564250045 is a deficient number, since it is larger than the sum of its proper divisors (4465239494723).

12021564250045 is a wasteful number, since it uses less digits than its factorization.

12021564250045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813740.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 12021564250045 in words is "twelve trillion, twenty-one billion, five hundred sixty-four million, two hundred fifty thousand, forty-five".