2402221321 has 4 divisors (see below), whose sum is σ = 2415493444. Its totient is φ = 2388949200.

The previous prime is 2402221301. The next prime is 2402221333. The reversal of 2402221321 is 1231222042.

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

It can be written as a sum of positive squares in 2 ways, for example, as 359633296 + 2042588025 = 18964^2 + 45195^2 .

It is a cyclic number.

It is not a de Polignac number, because 2402221321 - 2²⁵ = 2368666889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2402221301) 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, 6635790 + ... + 6636151.

It is an arithmetic number, because the mean of its divisors is an integer number (603873361).

Almost surely, 2^2402221321 is an apocalyptic number.

It is an amenable number.

2402221321 is a deficient number, since it is larger than the sum of its proper divisors (13272123).

2402221321 is a wasteful number, since it uses less digits than its factorization.

2402221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13272122.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2402221321 is about 49012.4608747612. The cubic root of 2402221321 is about 1339.2788354236.

Adding to 2402221321 its reverse (1231222042), we get a palindrome (3633443363).

The spelling of 2402221321 in words is "two billion, four hundred two million, two hundred twenty-one thousand, three hundred twenty-one".