1252311321422 has 16 divisors (see below), whose sum is σ = 2150924237952. Its totient is φ = 535678644600.

The previous prime is 1252311321421. The next prime is 1252311321427. The reversal of 1252311321422 is 2241231132521.

It is a super-2 number, since 2×1252311321422² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252311321421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85509704 + ... + 85524347.

It is an arithmetic number, because the mean of its divisors is an integer number (134432764872).

Almost surely, 2^{1252311321422} is an apocalyptic number.

1252311321422 is a deficient number, since it is larger than the sum of its proper divisors (898612916530).

1252311321422 is a wasteful number, since it uses less digits than its factorization.

1252311321422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171034583.

The product of its digits is 5760, while the sum is 29.

Adding to 1252311321422 its reverse (2241231132521), we get a palindrome (3493542453943).

The spelling of 1252311321422 in words is "one trillion, two hundred fifty-two billion, three hundred eleven million, three hundred twenty-one thousand, four hundred twenty-two".