1331112303021 has 4 divisors (see below), whose sum is σ = 1774816404032. Its totient is φ = 887408202012.

The previous prime is 1331112302969. The next prime is 1331112303029. The reversal of 1331112303021 is 1203032111331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1331112303021 - 2¹³ = 1331112294829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331112303029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221852050501 + ... + 221852050506.

It is an arithmetic number, because the mean of its divisors is an integer number (443704101008).

Almost surely, 2^{1331112303021} is an apocalyptic number.

It is an amenable number.

1331112303021 is a deficient number, since it is larger than the sum of its proper divisors (443704101011).

1331112303021 is an equidigital number, since it uses as much as digits as its factorization.

1331112303021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443704101010.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1331112303021 its reverse (1203032111331), we get a palindrome (2534144414352).

The spelling of 1331112303021 in words is "one trillion, three hundred thirty-one billion, one hundred twelve million, three hundred three thousand, twenty-one".