2222120321 has 4 divisors (see below), whose sum is σ = 2318734272. Its totient is φ = 2125506372.

The previous prime is 2222120311. The next prime is 2222120323. The reversal of 2222120321 is 1230212222.

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 2222120321 - 2¹⁰ = 2222119297 is a prime.

It is a super-2 number, since 2×2222120321² = 9875637442002286082, 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 2222120321.

It is not an unprimeable number, because it can be changed into a prime (2222120323) 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, 48306941 + ... + 48306986.

It is an arithmetic number, because the mean of its divisors is an integer number (579683568).

Almost surely, 2^2222120321 is an apocalyptic number.

It is an amenable number.

2222120321 is a deficient number, since it is larger than the sum of its proper divisors (96613951).

2222120321 is an equidigital number, since it uses as much as digits as its factorization.

2222120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96613950.

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

The square root of 2222120321 is about 47139.3712410338. The cubic root of 2222120321 is about 1304.9359335949.

Adding to 2222120321 its reverse (1230212222), we get a palindrome (3452332543).

The spelling of 2222120321 in words is "two billion, two hundred twenty-two million, one hundred twenty thousand, three hundred twenty-one".