202252344421 has 4 divisors (see below), whose sum is σ = 202253254732. Its totient is φ = 202251434112.

The previous prime is 202252344391. The next prime is 202252344491. The reversal of 202252344421 is 124443252202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 98979452100 + 103272892321 = 314610^2 + 321361^2 .

It is a cyclic number.

It is not a de Polignac number, because 202252344421 - 2¹⁷ = 202252213349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202252344491) 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, 122431 + ... + 647683.

It is an arithmetic number, because the mean of its divisors is an integer number (50563313683).

Almost surely, 2^202252344421 is an apocalyptic number.

It is an amenable number.

202252344421 is a deficient number, since it is larger than the sum of its proper divisors (910311).

202252344421 is an equidigital number, since it uses as much as digits as its factorization.

202252344421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910310.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 202252344421 its reverse (124443252202), we get a palindrome (326695596623).

The spelling of 202252344421 in words is "two hundred two billion, two hundred fifty-two million, three hundred forty-four thousand, four hundred twenty-one".