111021112220 has 48 divisors (see below), whose sum is σ = 246908360160. Its totient is φ = 41787777024.

The previous prime is 111021112187. The next prime is 111021112249. The reversal of 111021112220 is 22211120111.

It is a super-4 number, since 4×111021112220⁴ (a number of 45 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111021112195 and 111021112204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1812332 + ... + 1872588.

It is an arithmetic number, because the mean of its divisors is an integer number (5143924170).

Almost surely, 2^111021112220 is an apocalyptic number.

111021112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021112220 is an abundant number, since it is smaller than the sum of its proper divisors (135887247940).

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

111021112220 is a wasteful number, since it uses less digits than its factorization.

111021112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65702 (or 65700 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111021112220 its reverse (22211120111), we get a palindrome (133232232331).

The spelling of 111021112220 in words is "one hundred eleven billion, twenty-one million, one hundred twelve thousand, two hundred twenty".