111222102022220 has 72 divisors (see below), whose sum is σ = 271702635573600. Its totient is φ = 38132881006080.

The previous prime is 111222102022219. The next prime is 111222102022259. The reversal of 111222102022220 is 22220201222111.

It is a super-2 number, since 2×111222102022220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111222102022192 and 111222102022201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98527556 + ... + 99650004.

It is an arithmetic number, because the mean of its divisors is an integer number (3773647716300).

Almost surely, 2^{111222102022220} is an apocalyptic number.

111222102022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222102022220 is an abundant number, since it is smaller than the sum of its proper divisors (160480533551380).

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

111222102022220 is a wasteful number, since it uses less digits than its factorization.

111222102022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223583 (or 1223574 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 111222102022220 its reverse (22220201222111), we get a palindrome (133442303244331).

The spelling of 111222102022220 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred two million, twenty-two thousand, two hundred twenty".