111320012221 has 48 divisors (see below), whose sum is σ = 130599786240. Its totient is φ = 94484966400.

The previous prime is 111320012179. The next prime is 111320012231. The reversal of 111320012221 is 122210023111.

It is not a de Polignac number, because 111320012221 - 2⁷ = 111320012093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111320012195 and 111320012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111320012231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 258282876 + ... + 258283306.

It is an arithmetic number, because the mean of its divisors is an integer number (2720828880).

Almost surely, 2^111320012221 is an apocalyptic number.

111320012221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111320012221 is a deficient number, since it is larger than the sum of its proper divisors (19279774019).

111320012221 is a wasteful number, since it uses less digits than its factorization.

111320012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186 (or 1175 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111320012221 its reverse (122210023111), we get a palindrome (233530035332).

The spelling of 111320012221 in words is "one hundred eleven billion, three hundred twenty million, twelve thousand, two hundred twenty-one".