1321100013331 has 8 divisors (see below), whose sum is σ = 1589293249280. Its totient is φ = 1072772943048.

The previous prime is 1321100013329. The next prime is 1321100013383. The reversal of 1321100013331 is 1333100011231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321100013331 - 2¹ = 1321100013329 is a prime.

It is a super-2 number, since 2×1321100013331² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 1321100013299 and 1321100013308.

It is not an unprimeable number, because it can be changed into a prime (1321100013631) 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 7 ways as a sum of consecutive naturals, for example, 4966541271 + ... + 4966541536.

It is an arithmetic number, because the mean of its divisors is an integer number (198661656160).

Almost surely, 2^{1321100013331} is an apocalyptic number.

1321100013331 is a deficient number, since it is larger than the sum of its proper divisors (268193235949).

1321100013331 is an equidigital number, since it uses as much as digits as its factorization.

1321100013331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9933082833.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 1321100013331 its reverse (1333100011231), we get a palindrome (2654200024562).

The spelling of 1321100013331 in words is "one trillion, three hundred twenty-one billion, one hundred million, thirteen thousand, three hundred thirty-one".