111011020101220 has 48 divisors (see below), whose sum is σ = 237110587459200. Its totient is φ = 43645124537600.

The previous prime is 111011020101169. The next prime is 111011020101277. The reversal of 111011020101220 is 22101020110111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111011020101220.

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, 549816 + ... + 14910544.

It is an arithmetic number, because the mean of its divisors is an integer number (4939803905400).

Almost surely, 2^{111011020101220} is an apocalyptic number.

111011020101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111011020101220 is an abundant number, since it is smaller than the sum of its proper divisors (126099567357980).

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

111011020101220 is a wasteful number, since it uses less digits than its factorization.

111011020101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14367348 (or 14367346 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111011020101220 its reverse (22101020110111), we get a palindrome (133112040211331).

The spelling of 111011020101220 in words is "one hundred eleven trillion, eleven billion, twenty million, one hundred one thousand, two hundred twenty".