13220100331 has 4 divisors (see below), whose sum is σ = 13221458712. Its totient is φ = 13218741952.

The previous prime is 13220100301. The next prime is 13220100343. The reversal of 13220100331 is 13300102231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13220100331 - 2⁷ = 13220100203 is a prime.

It is a super-2 number, since 2×13220100331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13220100301) 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, 664486 + ... + 684091.

It is an arithmetic number, because the mean of its divisors is an integer number (3305364678).

Almost surely, 2^13220100331 is an apocalyptic number.

13220100331 is a deficient number, since it is larger than the sum of its proper divisors (1358381).

13220100331 is an equidigital number, since it uses as much as digits as its factorization.

13220100331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358380.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13220100331 its reverse (13300102231), we get a palindrome (26520202562).

The spelling of 13220100331 in words is "thirteen billion, two hundred twenty million, one hundred thousand, three hundred thirty-one".