111220210220 has 48 divisors (see below), whose sum is σ = 267361335360. Its totient is φ = 38070810624.

The previous prime is 111220210217. The next prime is 111220210237. The reversal of 111220210220 is 22012022111.

It is a super-6 number, since 6×111220210220⁶ (a number of 68 digits) contains 666666 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 111220210195 and 111220210204.

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, 557405 + ... + 730164.

It is an arithmetic number, because the mean of its divisors is an integer number (5570027820).

Almost surely, 2^111220210220 is an apocalyptic number.

111220210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220210220 is an abundant number, since it is smaller than the sum of its proper divisors (156141125140).

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

111220210220 is a wasteful number, since it uses less digits than its factorization.

111220210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288202 (or 1288200 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 111220210220 its reverse (22012022111), we get a palindrome (133232232331).

The spelling of 111220210220 in words is "one hundred eleven billion, two hundred twenty million, two hundred ten thousand, two hundred twenty".