111020212220 has 24 divisors (see below), whose sum is σ = 241181841600. Its totient is φ = 42876771392.

The previous prime is 111020212217. The next prime is 111020212241. The reversal of 111020212220 is 22212020111.

It is a junction number, because it is equal to n+sod(n) for n = 111020212195 and 111020212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95706500 + ... + 95707659.

It is an arithmetic number, because the mean of its divisors is an integer number (10049243400).

Almost surely, 2^111020212220 is an apocalyptic number.

111020212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111020212220 is an abundant number, since it is smaller than the sum of its proper divisors (130161629380).

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

111020212220 is a wasteful number, since it uses less digits than its factorization.

111020212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191414197 (or 191414195 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 111020212220 its reverse (22212020111), we get a palindrome (133232232331).

The spelling of 111020212220 in words is "one hundred eleven billion, twenty million, two hundred twelve thousand, two hundred twenty".