2123221983 has 4 divisors (see below), whose sum is σ = 2830962648. Its totient is φ = 1415481320.

The previous prime is 2123221981. The next prime is 2123221993. The reversal of 2123221983 is 3891223212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2123221983 - 2¹ = 2123221981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123221981) 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, 353870328 + ... + 353870333.

It is an arithmetic number, because the mean of its divisors is an integer number (707740662).

Almost surely, 2^2123221983 is an apocalyptic number.

2123221983 is a deficient number, since it is larger than the sum of its proper divisors (707740665).

2123221983 is an equidigital number, since it uses as much as digits as its factorization.

2123221983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707740664.

The product of its digits is 10368, while the sum is 33.

The square root of 2123221983 is about 46078.4329486149. The cubic root of 2123221983 is about 1285.2821241084.

The spelling of 2123221983 in words is "two billion, one hundred twenty-three million, two hundred twenty-one thousand, nine hundred eighty-three".