2123583221 has 4 divisors (see below), whose sum is σ = 2124276000. Its totient is φ = 2122890444.

The previous prime is 2123583211. The next prime is 2123583223. The reversal of 2123583221 is 1223853212.

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 a cyclic number.

It is not a de Polignac number, because 2123583221 - 2¹⁸ = 2123321077 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 (2123583223) 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, 341771 + ... + 347928.

It is an arithmetic number, because the mean of its divisors is an integer number (531069000).

Almost surely, 2^2123583221 is an apocalyptic number.

It is an amenable number.

2123583221 is a deficient number, since it is larger than the sum of its proper divisors (692779).

2123583221 is an equidigital number, since it uses as much as digits as its factorization.

2123583221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692778.

The product of its digits is 5760, while the sum is 29.

The square root of 2123583221 is about 46082.3525983646. The cubic root of 2123583221 is about 1285.3550111984.

The spelling of 2123583221 in words is "two billion, one hundred twenty-three million, five hundred eighty-three thousand, two hundred twenty-one".