1253222242321 has 12 divisors (see below), whose sum is σ = 1477800232932. Its totient is φ = 1059475552128.

The previous prime is 1253222242301. The next prime is 1253222242339. The reversal of 1253222242321 is 1232422223521.

It can be written as a sum of positive squares in 2 ways, for example, as 1091063811600 + 162158430721 = 1044540^2 + 402689^2 .

It is not a de Polignac number, because 1253222242321 - 2²⁵ = 1253188687889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253222242301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175174260 + ... + 175181413.

It is an arithmetic number, because the mean of its divisors is an integer number (123150019411).

Almost surely, 2^{1253222242321} is an apocalyptic number.

It is an amenable number.

1253222242321 is a deficient number, since it is larger than the sum of its proper divisors (224577990611).

1253222242321 is an equidigital number, since it uses as much as digits as its factorization.

1253222242321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350355760 (or 350355753 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

Adding to 1253222242321 its reverse (1232422223521), we get a palindrome (2485644465842).

The spelling of 1253222242321 in words is "one trillion, two hundred fifty-three billion, two hundred twenty-two million, two hundred forty-two thousand, three hundred twenty-one".