252143440222 has 16 divisors (see below), whose sum is σ = 390432931200. Its totient is φ = 121999489920.

The previous prime is 252143440193. The next prime is 252143440249. The reversal of 252143440222 is 222044341252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1565554 + ... + 1719082.

It is an arithmetic number, because the mean of its divisors is an integer number (24402058200).

Almost surely, 2^252143440222 is an apocalyptic number.

252143440222 is a deficient number, since it is larger than the sum of its proper divisors (138289490978).

252143440222 is a wasteful number, since it uses less digits than its factorization.

252143440222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180051.

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

Adding to 252143440222 its reverse (222044341252), we get a palindrome (474187781474).

The spelling of 252143440222 in words is "two hundred fifty-two billion, one hundred forty-three million, four hundred forty thousand, two hundred twenty-two".