110111021220 has 24 divisors (see below), whose sum is σ = 308310859584. Its totient is φ = 29362938976.

The previous prime is 110111021219. The next prime is 110111021227. The reversal of 110111021220 is 22120111011.

It is a super-2 number, since 2×110111021220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 110111021196 and 110111021205.

It is not an unprimeable number, because it can be changed into a prime (110111021227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917591784 + ... + 917591903.

It is an arithmetic number, because the mean of its divisors is an integer number (12846285816).

Almost surely, 2^110111021220 is an apocalyptic number.

110111021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110111021220 is an abundant number, since it is smaller than the sum of its proper divisors (198199838364).

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

110111021220 is a wasteful number, since it uses less digits than its factorization.

110111021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835183699 (or 1835183697 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 110111021220 its reverse (22120111011), we get a palindrome (132231132231).

The spelling of 110111021220 in words is "one hundred ten billion, one hundred eleven million, twenty-one thousand, two hundred twenty".