111122220111020 has 48 divisors (see below), whose sum is σ = 247058468223840. Its totient is φ = 41866065501696.

The previous prime is 111122220111011. The next prime is 111122220111059. The reversal of 111122220111020 is 20111022221111.

It is a super-2 number, since 2×111122220111020² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111122220111020.

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, 845098697 + ... + 845230176.

It is an arithmetic number, because the mean of its divisors is an integer number (5147051421330).

Almost surely, 2^{111122220111020} is an apocalyptic number.

111122220111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122220111020 is an abundant number, since it is smaller than the sum of its proper divisors (135936248112820).

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

111122220111020 is a wasteful number, since it uses less digits than its factorization.

111122220111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690329074 (or 1690329072 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111122220111020 its reverse (20111022221111), we get a palindrome (131233242332131).

The spelling of 111122220111020 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred twenty million, one hundred eleven thousand, twenty".