2321166524221 has 4 divisors (see below), whose sum is σ = 2396042863744. Its totient is φ = 2246290184700.

The previous prime is 2321166524207. The next prime is 2321166524273. The reversal of 2321166524221 is 1224256611232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2321166524221 - 2⁵ = 2321166524189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321166524291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37438169715 + ... + 37438169776.

It is an arithmetic number, because the mean of its divisors is an integer number (599010715936).

Almost surely, 2^{2321166524221} is an apocalyptic number.

It is an amenable number.

2321166524221 is a deficient number, since it is larger than the sum of its proper divisors (74876339523).

2321166524221 is an equidigital number, since it uses as much as digits as its factorization.

2321166524221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74876339522.

The product of its digits is 69120, while the sum is 37.

The spelling of 2321166524221 in words is "two trillion, three hundred twenty-one billion, one hundred sixty-six million, five hundred twenty-four thousand, two hundred twenty-one".