252221511551422 has 16 divisors (see below), whose sum is σ = 432381210992640. Its totient is φ = 108094564295928.

The previous prime is 252221511551413. The next prime is 252221511551431. The reversal of 252221511551422 is 224155115122252.

It is an interprime number because it is at equal distance from previous prime (252221511551413) and next prime (252221511551431).

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, 26503422 + ... + 34740097.

It is an arithmetic number, because the mean of its divisors is an integer number (27023825687040).

Almost surely, 2^{252221511551422} is an apocalyptic number.

252221511551422 is a deficient number, since it is larger than the sum of its proper divisors (180159699441218).

252221511551422 is a wasteful number, since it uses less digits than its factorization.

252221511551422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61537695.

The product of its digits is 160000, while the sum is 40.

Adding to 252221511551422 its reverse (224155115122252), we get a palindrome (476376626673674).

The spelling of 252221511551422 in words is "two hundred fifty-two trillion, two hundred twenty-one billion, five hundred eleven million, five hundred fifty-one thousand, four hundred twenty-two".