1331302140021 has 16 divisors (see below), whose sum is σ = 2070051920000. Its totient is φ = 760744079424.

The previous prime is 1331302140011. The next prime is 1331302140109. The reversal of 1331302140021 is 1200412031331.

It is not a de Polignac number, because 1331302140021 - 2²⁵ = 1331268585589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331302140021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331302140011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646890196 + ... + 646892253.

It is an arithmetic number, because the mean of its divisors is an integer number (129378245000).

Almost surely, 2^{1331302140021} is an apocalyptic number.

It is an amenable number.

1331302140021 is a deficient number, since it is larger than the sum of its proper divisors (738749779979).

1331302140021 is an equidigital number, since it uses as much as digits as its factorization.

1331302140021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293782473 (or 1293782459 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1331302140021 its reverse (1200412031331), we get a palindrome (2531714171352).

The spelling of 1331302140021 in words is "one trillion, three hundred thirty-one billion, three hundred two million, one hundred forty thousand, twenty-one".