2302213221 has 48 divisors (see below), whose sum is σ = 4326266880. Its totient is φ = 1143948960.

The previous prime is 2302213183. The next prime is 2302213231. The reversal of 2302213221 is 1223122032.

2302213221 is a `hidden beast` number, since 230 + 2 + 213 + 221 = 666.

2302213221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2302213221 - 2⁷ = 2302213093 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2302213194 and 2302213203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2302213231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56281 + ... + 88158.

It is an arithmetic number, because the mean of its divisors is an integer number (90130560).

Almost surely, 2^2302213221 is an apocalyptic number.

2302213221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2302213221 is a deficient number, since it is larger than the sum of its proper divisors (2024053659).

2302213221 is a wasteful number, since it uses less digits than its factorization.

2302213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144486 (or 144483 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2302213221 is about 47981.3841088395. The cubic root of 2302213221 is about 1320.4293868235.

Adding to 2302213221 its reverse (1223122032), we get a palindrome (3525335253).

The spelling of 2302213221 in words is "two billion, three hundred two million, two hundred thirteen thousand, two hundred twenty-one".