111120221213 has 4 divisors (see below), whose sum is σ = 113704412448. Its totient is φ = 108536029980.

The previous prime is 111120221171. The next prime is 111120221221. The reversal of 111120221213 is 312122021111.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 312122021111 = 23 ⋅13570522657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111120221213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111120221191 and 111120221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120221263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1292095553 + ... + 1292095638.

It is an arithmetic number, because the mean of its divisors is an integer number (28426103112).

Almost surely, 2^111120221213 is an apocalyptic number.

It is an amenable number.

111120221213 is a deficient number, since it is larger than the sum of its proper divisors (2584191235).

111120221213 is an equidigital number, since it uses as much as digits as its factorization.

111120221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584191234.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111120221213 its reverse (312122021111), we get a palindrome (423242242324).

The spelling of 111120221213 in words is "one hundred eleven billion, one hundred twenty million, two hundred twenty-one thousand, two hundred thirteen".