111320312122 has 4 divisors (see below), whose sum is σ = 166980468186. Its totient is φ = 55660156060.

The previous prime is 111320312111. The next prime is 111320312149. The reversal of 111320312122 is 221213023111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221213023111 = 691 ⋅320134621.

It can be written as a sum of positive squares in only one way, i.e., 110829733921 + 490578201 = 332911^2 + 22149^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111320312122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27830078029 + ... + 27830078032.

Almost surely, 2^111320312122 is an apocalyptic number.

111320312122 is a deficient number, since it is larger than the sum of its proper divisors (55660156064).

111320312122 is an equidigital number, since it uses as much as digits as its factorization.

111320312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55660156063.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111320312122 its reverse (221213023111), we get a palindrome (332533335233).

The spelling of 111320312122 in words is "one hundred eleven billion, three hundred twenty million, three hundred twelve thousand, one hundred twenty-two".