111220201210 has 8 divisors (see below), whose sum is σ = 200196362196. Its totient is φ = 44488080480.

The previous prime is 111220201199. The next prime is 111220201223. The reversal of 111220201210 is 12102022111.

It can be written as a sum of positive squares in 2 ways, for example, as 102176761801 + 9043439409 = 319651^2 + 95097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5561010051 + ... + 5561010070.

Almost surely, 2^111220201210 is an apocalyptic number.

111220201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111220201210 is a deficient number, since it is larger than the sum of its proper divisors (88976160986).

111220201210 is a wasteful number, since it uses less digits than its factorization.

111220201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11122020128.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111220201210 its reverse (12102022111), we get a palindrome (123322223321).

The spelling of 111220201210 in words is "one hundred eleven billion, two hundred twenty million, two hundred one thousand, two hundred ten".