252143440221 has 8 divisors (see below), whose sum is σ = 337441036320. Its totient is φ = 167470735472.

The previous prime is 252143440193. The next prime is 252143440249. The reversal of 252143440221 is 122044341252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (252143440193) and next prime (252143440249).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252143440221 - 2¹⁴ = 252143423837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252143440121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156221895 + ... + 156223508.

It is an arithmetic number, because the mean of its divisors is an integer number (42180129540).

Almost surely, 2^252143440221 is an apocalyptic number.

It is an amenable number.

252143440221 is a deficient number, since it is larger than the sum of its proper divisors (85297596099).

252143440221 is a wasteful number, since it uses less digits than its factorization.

252143440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312445675.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 252143440221 its reverse (122044341252), we get a palindrome (374187781473).

The spelling of 252143440221 in words is "two hundred fifty-two billion, one hundred forty-three million, four hundred forty thousand, two hundred twenty-one".