202252021 has 4 divisors (see below), whose sum is σ = 202474944. Its totient is φ = 202029100.

The previous prime is 202252019. The next prime is 202252049. The reversal of 202252021 is 120252202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202252021 - 2¹ = 202252019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202251986 and 202252004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202255021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110095 + ... + 111916.

It is an arithmetic number, because the mean of its divisors is an integer number (50618736).

Almost surely, 2^202252021 is an apocalyptic number.

It is an amenable number.

202252021 is a deficient number, since it is larger than the sum of its proper divisors (222923).

202252021 is an equidigital number, since it uses as much as digits as its factorization.

202252021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222922.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 202252021 is about 14221.5337077265. The cubic root of 202252021 is about 586.9903433331.

The spelling of 202252021 in words is "two hundred two million, two hundred fifty-two thousand, twenty-one".