2220332921 has 2 divisors, whose sum is σ = 2220332922. Its totient is φ = 2220332920.

The previous prime is 2220332911. The next prime is 2220332927. The reversal of 2220332921 is 1292330222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1751004025 + 469328896 = 41845^2 + 21664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220332921 is a prime.

It is not a weakly prime, because it can be changed into another prime (2220332927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110166460 + 1110166461.

It is an arithmetic number, because the mean of its divisors is an integer number (1110166461).

Almost surely, 2^2220332921 is an apocalyptic number.

It is an amenable number.

2220332921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220332921 is an equidigital number, since it uses as much as digits as its factorization.

2220332921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 2220332921 is about 47120.4087524716. The cubic root of 2220332921 is about 1304.5859573244.

The spelling of 2220332921 in words is "two billion, two hundred twenty million, three hundred thirty-two thousand, nine hundred twenty-one".