111322220220 has 72 divisors (see below), whose sum is σ = 337791636000. Its totient is φ = 29675882880.

The previous prime is 111322220209. The next prime is 111322220263. The reversal of 111322220220 is 22022223111.

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 = 111322220193 and 111322220202.

It is a congruent number.

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, 436710 + ... + 642930.

It is an arithmetic number, because the mean of its divisors is an integer number (4691550500).

Almost surely, 2^111322220220 is an apocalyptic number.

111322220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111322220220 is an abundant number, since it is smaller than the sum of its proper divisors (226469415780).

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

111322220220 is a wasteful number, since it uses less digits than its factorization.

111322220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209235 (or 209230 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 111322220220 its reverse (22022223111), we get a palindrome (133344443331).

The spelling of 111322220220 in words is "one hundred eleven billion, three hundred twenty-two million, two hundred twenty thousand, two hundred twenty".