1312103211102 has 64 divisors (see below), whose sum is σ = 2950807449600. Its totient is φ = 432132458400.

The previous prime is 1312103211053. The next prime is 1312103211103. The reversal of 1312103211102 is 2011123012131.

1312103211102 is a `hidden beast` number, since 1 + 31 + 210 + 321 + 1 + 102 = 666.

It is a super-2 number, since 2×1312103211102² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312103211103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2361343 + ... + 2863589.

It is an arithmetic number, because the mean of its divisors is an integer number (46106366400).

Almost surely, 2^{1312103211102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312103211102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1475403724800).

1312103211102 is an abundant number, since it is smaller than the sum of its proper divisors (1638704238498).

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

1312103211102 is a wasteful number, since it uses less digits than its factorization.

1312103211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502838 (or 502832 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1312103211102 its reverse (2011123012131), we get a palindrome (3323226223233).

The spelling of 1312103211102 in words is "one trillion, three hundred twelve billion, one hundred three million, two hundred eleven thousand, one hundred two".