1312021003200 has 168 divisors, whose sum is σ = 4359011124480. Its totient is φ = 345443404800.

The previous prime is 1312021003199. The next prime is 1312021003201. The reversal of 1312021003200 is 23001202131.

It is an interprime number because it is at equal distance from previous prime (1312021003199) and next prime (1312021003201).

It is a super-2 number, since 2×1312021003200² (a number of 25 digits) contains 22 as substring.

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 1312021003200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312021003201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1350786 + ... + 2109185.

Almost surely, 2^{1312021003200} is an apocalyptic number.

1312021003200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312021003200 is an abundant number, since it is smaller than the sum of its proper divisors (3046990121280).

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

1312021003200 is a wasteful number, since it uses less digits than its factorization.

1312021003200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460075 (or 3460060 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1312021003200 its reverse (23001202131), we get a palindrome (1335022205331).

The spelling of 1312021003200 in words is "one trillion, three hundred twelve billion, twenty-one million, three thousand, two hundred".