1312100222100 has 36 divisors (see below), whose sum is σ = 3796343310144. Its totient is φ = 349893392480.

The previous prime is 1312100222099. The next prime is 1312100222101. The reversal of 1312100222100 is 12220012131.

It is an interprime number because it is at equal distance from previous prime (1312100222099) and next prime (1312100222101).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1312100222100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312100222101) 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, 2186833404 + ... + 2186834003.

Almost surely, 2^{1312100222100} is an apocalyptic number.

1312100222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312100222100 is an abundant number, since it is smaller than the sum of its proper divisors (2484243088044).

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

1312100222100 is a wasteful number, since it uses less digits than its factorization.

1312100222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373667424 (or 4373667417 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1312100222100 its reverse (12220012131), we get a palindrome (1324320234231).

The spelling of 1312100222100 in words is "one trillion, three hundred twelve billion, one hundred million, two hundred twenty-two thousand, one hundred".