111312221011210 has 16 divisors (see below), whose sum is σ = 200362196380392. Its totient is φ = 44524844280000.

The previous prime is 111312221011177. The next prime is 111312221011219. The reversal of 111312221011210 is 12110122213111.

It can be written as a sum of positive squares in 4 ways, for example, as 24412779383041 + 86899441628169 = 4940929^2 + 9321987^2 .

It is not an unprimeable number, because it can be changed into a prime (111312221011219) 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, 6281200 + ... + 16188820.

Almost surely, 2^{111312221011210} is an apocalyptic number.

111312221011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111312221011210 is a deficient number, since it is larger than the sum of its proper divisors (89049975369182).

111312221011210 is a wasteful number, since it uses less digits than its factorization.

111312221011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11031129.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 111312221011210 its reverse (12110122213111), we get a palindrome (123422343224321).

The spelling of 111312221011210 in words is "one hundred eleven trillion, three hundred twelve billion, two hundred twenty-one million, eleven thousand, two hundred ten".