1312202021130 has 768 divisors, whose sum is σ = 4952431411200. Its totient is φ = 231988561920.

The previous prime is 1312202021129. The next prime is 1312202021161. The reversal of 1312202021130 is 311202022131.

1312202021130 is a `hidden beast` number, since 1 + 312 + 20 + 202 + 1 + 130 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 63322911 + ... + 63343629.

It is an arithmetic number, because the mean of its divisors is an integer number (6448478400).

Almost surely, 2^{1312202021130} is an apocalyptic number.

1312202021130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312202021130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2476215705600).

1312202021130 is an abundant number, since it is smaller than the sum of its proper divisors (3640229390070).

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

1312202021130 is a wasteful number, since it uses less digits than its factorization.

1312202021130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20819 (or 20816 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1312202021130 its reverse (311202022131), we get a palindrome (1623404043261).

The spelling of 1312202021130 in words is "one trillion, three hundred twelve billion, two hundred two million, twenty-one thousand, one hundred thirty".