111220310112 has 48 divisors (see below), whose sum is σ = 292380943680. Its totient is φ = 37019134592.

The previous prime is 111220310093. The next prime is 111220310137. The reversal of 111220310112 is 211013022111.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 111220310091 and 111220310100.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 782562 + ... + 913697.

It is an arithmetic number, because the mean of its divisors is an integer number (6091269660).

Almost surely, 2^111220310112 is an apocalyptic number.

111220310112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111220310112 is an abundant number, since it is smaller than the sum of its proper divisors (181160633568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111220310112 is a wasteful number, since it uses less digits than its factorization.

111220310112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696955 (or 1696947 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111220310112 its reverse (211013022111), we get a palindrome (322233332223).

The spelling of 111220310112 in words is "one hundred eleven billion, two hundred twenty million, three hundred ten thousand, one hundred twelve".