11121213113321 has 4 divisors (see below), whose sum is σ = 11604744118272. Its totient is φ = 10637682108372.

The previous prime is 11121213113291. The next prime is 11121213113359. The reversal of 11121213113321 is 12331131212111.

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 a cyclic number.

It is not a de Polignac number, because 11121213113321 - 2²⁶ = 11121146004457 is a prime.

It is a super-2 number, since 2×11121213113321² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 483531004927 = 11121213113321 / (1 + 1 + 1 + 2 + 1 + 2 + 1 + 3 + 1 + 1 + 3 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121213113821) 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, 241765502441 + ... + 241765502486.

It is an arithmetic number, because the mean of its divisors is an integer number (2901186029568).

Almost surely, 2^{11121213113321} is an apocalyptic number.

It is an amenable number.

11121213113321 is a deficient number, since it is larger than the sum of its proper divisors (483531004951).

11121213113321 is an equidigital number, since it uses as much as digits as its factorization.

11121213113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483531004950.

The product of its digits is 216, while the sum is 23.

Adding to 11121213113321 its reverse (12331131212111), we get a palindrome (23452344325432).

The spelling of 11121213113321 in words is "eleven trillion, one hundred twenty-one billion, two hundred thirteen million, one hundred thirteen thousand, three hundred twenty-one".