2176157233221 has 16 divisors (see below), whose sum is σ = 3072261826368. Its totient is φ = 1365414278400.

The previous prime is 2176157233213. The next prime is 2176157233253. The reversal of 2176157233221 is 1223327516712.

It is not a de Polignac number, because 2176157233221 - 2³ = 2176157233213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2176157233291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4491186 + ... + 4952076.

It is an arithmetic number, because the mean of its divisors is an integer number (192016364148).

Almost surely, 2^{2176157233221} is an apocalyptic number.

It is an amenable number.

2176157233221 is a deficient number, since it is larger than the sum of its proper divisors (896104593147).

2176157233221 is a wasteful number, since it uses less digits than its factorization.

2176157233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553492.

The product of its digits is 211680, while the sum is 42.

The spelling of 2176157233221 in words is "two trillion, one hundred seventy-six billion, one hundred fifty-seven million, two hundred thirty-three thousand, two hundred twenty-one".