1321100310000 has 100 divisors (see below), whose sum is σ = 4264688044232. Its totient is φ = 352293408000.

The previous prime is 1321100309993. The next prime is 1321100310007. The reversal of 1321100310000 is 130011231.

It is an interprime number because it is at equal distance from previous prime (1321100309993) and next prime (1321100310007).

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×1321100310000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321100310007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21988339 + ... + 22048338.

Almost surely, 2^{1321100310000} is an apocalyptic number.

1321100310000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321100310000 is an abundant number, since it is smaller than the sum of its proper divisors (2943587734232).

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

1321100310000 is an equidigital number, since it uses as much as digits as its factorization.

1321100310000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44036708 (or 44036687 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 1321100310000 its reverse (130011231), we get a palindrome (1321230321231).

The spelling of 1321100310000 in words is "one trillion, three hundred twenty-one billion, one hundred million, three hundred ten thousand".