2023122221 has 4 divisors (see below), whose sum is σ = 2023217052. Its totient is φ = 2023027392.

The previous prime is 2023122197. The next prime is 2023122263. The reversal of 2023122221 is 1222213202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 794619721 + 1228502500 = 28189^2 + 35050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2023122221 is a prime.

It is a super-2 number, since 2×2023122221² = 8186047042207945682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2023122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023122271) 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, 1205 + ... + 63621.

It is an arithmetic number, because the mean of its divisors is an integer number (505804263).

Almost surely, 2^2023122221 is an apocalyptic number.

It is an amenable number.

2023122221 is a deficient number, since it is larger than the sum of its proper divisors (94831).

2023122221 is an equidigital number, since it uses as much as digits as its factorization.

2023122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94830.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2023122221 is about 44979.1309498083. The cubic root of 2023122221 is about 1264.7578201885.

Adding to 2023122221 its reverse (1222213202), we get a palindrome (3245335423).

The spelling of 2023122221 in words is "two billion, twenty-three million, one hundred twenty-two thousand, two hundred twenty-one".