111220211210 has 16 divisors (see below), whose sum is σ = 202178524392. Its totient is φ = 44047608000.

The previous prime is 111220211209. The next prime is 111220211227. The reversal of 111220211210 is 12112022111.

It can be written as a sum of positive squares in 4 ways, for example, as 111024239209 + 195972001 = 333203^2 + 13999^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55058501 + ... + 55060520.

Almost surely, 2^111220211210 is an apocalyptic number.

111220211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111220211210 is a deficient number, since it is larger than the sum of its proper divisors (90958313182).

111220211210 is a wasteful number, since it uses less digits than its factorization.

111220211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110119129.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111220211210 its reverse (12112022111), we get a palindrome (123332233321).

The spelling of 111220211210 in words is "one hundred eleven billion, two hundred twenty million, two hundred eleven thousand, two hundred ten".