111312211210 has 16 divisors (see below), whose sum is σ = 212147979336. Its totient is φ = 41905773568.

The previous prime is 111312211207. The next prime is 111312211237. The reversal of 111312211210 is 12112213111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 109356537481 + 1955673729 = 330691^2 + 44223^2 .

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 7 ways as a sum of consecutive naturals, for example, 327388687 + ... + 327389026.

Almost surely, 2^111312211210 is an apocalyptic number.

111312211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111312211210 is a deficient number, since it is larger than the sum of its proper divisors (100835768126).

111312211210 is a wasteful number, since it uses less digits than its factorization.

111312211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654777737.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111312211210 its reverse (12112213111), we get a palindrome (123424424321).

The spelling of 111312211210 in words is "one hundred eleven billion, three hundred twelve million, two hundred eleven thousand, two hundred ten".