111222211101020 has 48 divisors (see below), whose sum is σ = 246460161084480. Its totient is φ = 42076443695616.

The previous prime is 111222211101019. The next prime is 111222211101041. The reversal of 111222211101020 is 20101112222111.

It is a self number, because there is not a number n which added to its sum of digits gives 111222211101020.

It is a congruent number.

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, 1358315327 + ... + 1358397206.

It is an arithmetic number, because the mean of its divisors is an integer number (5134586689260).

Almost surely, 2^{111222211101020} is an apocalyptic number.

111222211101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222211101020 is an abundant number, since it is smaller than the sum of its proper divisors (135237949983460).

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

111222211101020 is a wasteful number, since it uses less digits than its factorization.

111222211101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2716712654 (or 2716712652 counting only the distinct ones).

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

Adding to 111222211101020 its reverse (20101112222111), we get a palindrome (131323323323131).

The spelling of 111222211101020 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred eleven million, one hundred one thousand, twenty".