111120100021220 has 48 divisors (see below), whose sum is σ = 238827466725120. Its totient is φ = 43409184102144.

The previous prime is 111120100021163. The next prime is 111120100021243. The reversal of 111120100021220 is 22120001021111.

It is a junction number, because it is equal to n+sod(n) for n = 111120100021195 and 111120100021204.

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, 126127265 + ... + 127005224.

It is an arithmetic number, because the mean of its divisors is an integer number (4975572223440).

Almost surely, 2^{111120100021220} is an apocalyptic number.

111120100021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111120100021220 is an abundant number, since it is smaller than the sum of its proper divisors (127707366703900).

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

111120100021220 is a wasteful number, since it uses less digits than its factorization.

111120100021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253133012 (or 253133010 counting only the distinct ones).

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

Adding to 111120100021220 its reverse (22120001021111), we get a palindrome (133240101042331).

The spelling of 111120100021220 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred million, twenty-one thousand, two hundred twenty".