202221139 has 2 divisors, whose sum is σ = 202221140. Its totient is φ = 202221138.

The previous prime is 202221127. The next prime is 202221167. The reversal of 202221139 is 931122202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202221139 - 2⁷ = 202221011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (202221109) 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, 101110569 + 101110570.

It is an arithmetic number, because the mean of its divisors is an integer number (101110570).

Almost surely, 2^202221139 is an apocalyptic number.

202221139 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221139 is an equidigital number, since it uses as much as digits as its factorization.

202221139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 202221139 is about 14220.4479184026. The cubic root of 202221139 is about 586.9604658261.

The spelling of 202221139 in words is "two hundred two million, two hundred twenty-one thousand, one hundred thirty-nine".