111220110100220 has 96 divisors (see below), whose sum is σ = 271723998954240. Its totient is φ = 37790790128640.

The previous prime is 111220110100189. The next prime is 111220110100259. The reversal of 111220110100220 is 22001011022111.

It is a junction number, because it is equal to n+sod(n) for n = 111220110100195 and 111220110100204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106451354 + ... + 107491073.

It is an arithmetic number, because the mean of its divisors is an integer number (2830458322440).

Almost surely, 2^{111220110100220} is an apocalyptic number.

111220110100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220110100220 is an abundant number, since it is smaller than the sum of its proper divisors (160503888854020).

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

111220110100220 is a wasteful number, since it uses less digits than its factorization.

111220110100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213942603 (or 213942601 counting only the distinct ones).

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

Adding to 111220110100220 its reverse (22001011022111), we get a palindrome (133221121122331).

The spelling of 111220110100220 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred ten million, one hundred thousand, two hundred twenty".