1312122123202 has 32 divisors (see below), whose sum is σ = 2290003773120. Its totient is φ = 557238305280.

The previous prime is 1312122123197. The next prime is 1312122123203. The reversal of 1312122123202 is 2023212212131.

It is a super-2 number, since 2×1312122123202² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1312122123203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12752952 + ... + 12855427.

It is an arithmetic number, because the mean of its divisors is an integer number (71562617910).

Almost surely, 2^{1312122123202} is an apocalyptic number.

1312122123202 is a deficient number, since it is larger than the sum of its proper divisors (977881649918).

1312122123202 is a wasteful number, since it uses less digits than its factorization.

1312122123202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25608546.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1312122123202 its reverse (2023212212131), we get a palindrome (3335334335333).

The spelling of 1312122123202 in words is "one trillion, three hundred twelve billion, one hundred twenty-two million, one hundred twenty-three thousand, two hundred two".