111112012122220 has 24 divisors (see below), whose sum is σ = 233405443840464. Its totient is φ = 44431429918656.

The previous prime is 111112012122197. The next prime is 111112012122263. The reversal of 111112012122220 is 22221210211111.

It is a happy 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, 835865019 + ... + 835997938.

It is an arithmetic number, because the mean of its divisors is an integer number (9725226826686).

Almost surely, 2^{111112012122220} is an apocalyptic number.

111112012122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111112012122220 is an abundant number, since it is smaller than the sum of its proper divisors (122293431718244).

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

111112012122220 is a wasteful number, since it uses less digits than its factorization.

111112012122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671866289 (or 1671866287 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111112012122220 its reverse (22221210211111), we get a palindrome (133333222333331).

The spelling of 111112012122220 in words is "one hundred eleven trillion, one hundred twelve billion, twelve million, one hundred twenty-two thousand, two hundred twenty".