1312122254652 has 144 divisors (see below), whose sum is σ = 3780107866080. Its totient is φ = 380100672000.

The previous prime is 1312122254593. The next prime is 1312122254693. The reversal of 1312122254652 is 2564522212131.

1312122254652 is a `hidden beast` number, since 1 + 31 + 2 + 12 + 22 + 546 + 52 = 666.

It is a super-2 number, since 2×1312122254652² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 594258 + ... + 1725510.

It is an arithmetic number, because the mean of its divisors is an integer number (26250749070).

Almost surely, 2^{1312122254652} is an apocalyptic number.

1312122254652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312122254652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890053933040).

1312122254652 is an abundant number, since it is smaller than the sum of its proper divisors (2467985611428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312122254652 is a wasteful number, since it uses less digits than its factorization.

1312122254652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131404 (or 1131399 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 1312122254652 its reverse (2564522212131), we get a palindrome (3876644466783).

The spelling of 1312122254652 in words is "one trillion, three hundred twelve billion, one hundred twenty-two million, two hundred fifty-four thousand, six hundred fifty-two".