1312100220122 has 8 divisors (see below), whose sum is σ = 1968155471700. Its totient is φ = 656048396224.

The previous prime is 1312100220097. The next prime is 1312100220127. The reversal of 1312100220122 is 2210220012131.

It can be written as a sum of positive squares in 2 ways, for example, as 1281240622561 + 30859597561 = 1131919^2 + 175669^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1312100220122.

It is not an unprimeable number, because it can be changed into a prime (1312100220127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586004 + ... + 1722672.

Almost surely, 2^{1312100220122} is an apocalyptic number.

1312100220122 is a deficient number, since it is larger than the sum of its proper divisors (656055251578).

1312100220122 is a wasteful number, since it uses less digits than its factorization.

1312100220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713840.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1312100220122 its reverse (2210220012131), we get a palindrome (3522320232253).

The spelling of 1312100220122 in words is "one trillion, three hundred twelve billion, one hundred million, two hundred twenty thousand, one hundred twenty-two".