111012222210 has 64 divisors (see below), whose sum is σ = 273876861312. Its totient is φ = 28777199616.

The previous prime is 111012222187. The next prime is 111012222253. The reversal of 111012222210 is 12222210111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111012222210.

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, 1202002 + ... + 1291058.

It is an arithmetic number, because the mean of its divisors is an integer number (4279325958).

Almost surely, 2^111012222210 is an apocalyptic number.

111012222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111012222210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136938430656).

111012222210 is an abundant number, since it is smaller than the sum of its proper divisors (162864639102).

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

111012222210 is a wasteful number, since it uses less digits than its factorization.

111012222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90227.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111012222210 its reverse (12222210111), we get a palindrome (123234432321).

The spelling of 111012222210 in words is "one hundred eleven billion, twelve million, two hundred twenty-two thousand, two hundred ten".