111101221222020 has 96 divisors (see below), whose sum is σ = 349211627923200. Its totient is φ = 29321559401472.

The previous prime is 111101221222001. The next prime is 111101221222087. The reversal of 111101221222020 is 20222122101111.

111101221222020 is a `hidden beast` number, since 111 + 101 + 2 + 212 + 220 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111101221221984 and 111101221222002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1060478560 + ... + 1060583319.

It is an arithmetic number, because the mean of its divisors is an integer number (3637621124200).

Almost surely, 2^{111101221222020} is an apocalyptic number.

111101221222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111101221222020 is an abundant number, since it is smaller than the sum of its proper divisors (238110406701180).

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

111101221222020 is a wasteful number, since it uses less digits than its factorization.

111101221222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121061994 (or 2121061986 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111101221222020 its reverse (20222122101111), we get a palindrome (131323343323131).

The spelling of 111101221222020 in words is "one hundred eleven trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty-two thousand, twenty".