202422991 has 2 divisors, whose sum is σ = 202422992. Its totient is φ = 202422990.

The previous prime is 202422989. The next prime is 202423003. The reversal of 202422991 is 199224202.

202422991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202422991 - 2¹ = 202422989 is a prime.

Together with 202422989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202422911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101211495 + 101211496.

It is an arithmetic number, because the mean of its divisors is an integer number (101211496).

Almost surely, 2^202422991 is an apocalyptic number.

202422991 is a deficient number, since it is larger than the sum of its proper divisors (1).

202422991 is an equidigital number, since it uses as much as digits as its factorization.

202422991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 202422991 is about 14227.5433930106. The cubic root of 202422991 is about 587.1556972205.

The spelling of 202422991 in words is "two hundred two million, four hundred twenty-two thousand, nine hundred ninety-one".