111213221210 has 64 divisors (see below), whose sum is σ = 247041349632. Its totient is φ = 35102681856.

The previous prime is 111213221191. The next prime is 111213221233. The reversal of 111213221210 is 12122312111.

It is a happy number.

It is a super-3 number, since 3×111213221210³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175607 + ... + 503253.

It is an arithmetic number, because the mean of its divisors is an integer number (3860021088).

Almost surely, 2^111213221210 is an apocalyptic number.

111213221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111213221210 is an abundant number, since it is smaller than the sum of its proper divisors (135828128422).

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

111213221210 is a wasteful number, since it uses less digits than its factorization.

111213221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328047.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111213221210 its reverse (12122312111), we get a palindrome (123335533321).

Subtracting from 111213221210 its reverse (12122312111), we obtain a palindrome (99090909099).

The spelling of 111213221210 in words is "one hundred eleven billion, two hundred thirteen million, two hundred twenty-one thousand, two hundred ten".