2202100921 has 2 divisors, whose sum is σ = 2202100922. Its totient is φ = 2202100920.

The previous prime is 2202100913. The next prime is 2202100987. The reversal of 2202100921 is 1290012022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1911875625 + 290225296 = 43725^2 + 17036^2 .

It is a cyclic number.

It is not a de Polignac number, because 2202100921 - 2³ = 2202100913 is a prime.

It is not a weakly prime, because it can be changed into another prime (2202110921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1101050460 + 1101050461.

It is an arithmetic number, because the mean of its divisors is an integer number (1101050461).

Almost surely, 2^2202100921 is an apocalyptic number.

It is an amenable number.

2202100921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2202100921 is an equidigital number, since it uses as much as digits as its factorization.

2202100921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2202100921 is about 46926.5481470777. The cubic root of 2202100921 is about 1301.0053211772.

Adding to 2202100921 its reverse (1290012022), we get a palindrome (3492112943).

The spelling of 2202100921 in words is "two billion, two hundred two million, one hundred thousand, nine hundred twenty-one".