11213131321 has 16 divisors (see below), whose sum is σ = 12879694080. Its totient is φ = 9562867200.

The previous prime is 11213131313. The next prime is 11213131339. The reversal of 11213131321 is 12313131211.

It is a cyclic number.

It is not a de Polignac number, because 11213131321 - 2³ = 11213131313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213131351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1143180 + ... + 1152946.

It is an arithmetic number, because the mean of its divisors is an integer number (804980880).

Almost surely, 2^11213131321 is an apocalyptic number.

It is an amenable number.

11213131321 is a deficient number, since it is larger than the sum of its proper divisors (1666562759).

11213131321 is an equidigital number, since it uses as much as digits as its factorization.

11213131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10584.

The product of its digits is 108, while the sum is 19.

Adding to 11213131321 its reverse (12313131211), we get a palindrome (23526262532).

The spelling of 11213131321 in words is "eleven billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred twenty-one".