111210311321 has 4 divisors (see below), whose sum is σ = 116045542272. Its totient is φ = 106375080372.

The previous prime is 111210311249. The next prime is 111210311341. The reversal of 111210311321 is 123113012111.

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 111210311321 - 2¹⁰ = 111210310297 is a prime.

It is a super-2 number, since 2×111210311321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111210311321.

It is not an unprimeable number, because it can be changed into a prime (111210311341) 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, 2417615441 + ... + 2417615486.

It is an arithmetic number, because the mean of its divisors is an integer number (29011385568).

Almost surely, 2^111210311321 is an apocalyptic number.

It is an amenable number.

111210311321 is a deficient number, since it is larger than the sum of its proper divisors (4835230951).

111210311321 is an equidigital number, since it uses as much as digits as its factorization.

111210311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4835230950.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111210311321 its reverse (123113012111), we get a palindrome (234323323432).

The spelling of 111210311321 in words is "one hundred eleven billion, two hundred ten million, three hundred eleven thousand, three hundred twenty-one".