2150566015221 has 48 divisors (see below), whose sum is σ = 3495828615552. Its totient is φ = 1264051958400.

The previous prime is 2150566015187. The next prime is 2150566015223. The reversal of 2150566015221 is 1225106650512.

2150566015221 is a `hidden beast` number, since 21 + 5 + 0 + 5 + 6 + 601 + 5 + 2 + 21 = 666.

It is not a de Polignac number, because 2150566015221 - 2²² = 2150561820917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150566015223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1281211 + ... + 2437751.

It is an arithmetic number, because the mean of its divisors is an integer number (72829762824).

Almost surely, 2^{2150566015221} is an apocalyptic number.

It is an amenable number.

2150566015221 is a deficient number, since it is larger than the sum of its proper divisors (1345262600331).

2150566015221 is a wasteful number, since it uses less digits than its factorization.

2150566015221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157274 (or 1157271 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 2150566015221 in words is "two trillion, one hundred fifty billion, five hundred sixty-six million, fifteen thousand, two hundred twenty-one".