111100021122210 has 64 divisors (see below), whose sum is σ = 282326037259392. Its totient is φ = 27883800677376.

The previous prime is 111100021122179. The next prime is 111100021122247. The reversal of 111100021122210 is 12221120001111.

It is a happy number.

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 111100021122210.

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, 170199372 + ... + 170850888.

It is an arithmetic number, because the mean of its divisors is an integer number (4411344332178).

Almost surely, 2^{111100021122210} is an apocalyptic number.

111100021122210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111100021122210 is an abundant number, since it is smaller than the sum of its proper divisors (171226016137182).

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

111100021122210 is a wasteful number, since it uses less digits than its factorization.

111100021122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985907.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111100021122210 its reverse (12221120001111), we get a palindrome (123321141123321).

The spelling of 111100021122210 in words is "one hundred eleven trillion, one hundred billion, twenty-one million, one hundred twenty-two thousand, two hundred ten".