111012112101220 has 48 divisors (see below), whose sum is σ = 254387449225728. Its totient is φ = 40357121333760.

The previous prime is 111012112101217. The next prime is 111012112101263. The reversal of 111012112101220 is 22101211210111.

It is a junction number, because it is equal to n+sod(n) for n = 111012112101194 and 111012112101203.

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, 67431252 + ... + 69057931.

It is an arithmetic number, because the mean of its divisors is an integer number (5299738525536).

Almost surely, 2^{111012112101220} is an apocalyptic number.

111012112101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012112101220 is an abundant number, since it is smaller than the sum of its proper divisors (143375337124508).

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

111012112101220 is a wasteful number, since it uses less digits than its factorization.

111012112101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136492900 (or 136492898 counting only the distinct ones).

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

Adding to 111012112101220 its reverse (22101211210111), we get a palindrome (133113323311331).

The spelling of 111012112101220 in words is "one hundred eleven trillion, twelve billion, one hundred twelve million, one hundred one thousand, two hundred twenty".