111122222111210 has 8 divisors (see below), whose sum is σ = 200019999800196. Its totient is φ = 44448888844480.

The previous prime is 111122222111149. The next prime is 111122222111221. The reversal of 111122222111210 is 12111222221111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 102340476624409 + 8781745486801 = 10116347^2 + 2963401^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5556111105551 + ... + 5556111105570.

Almost surely, 2^{111122222111210} is an apocalyptic number.

111122222111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111122222111210 is a deficient number, since it is larger than the sum of its proper divisors (88897777688986).

111122222111210 is a wasteful number, since it uses less digits than its factorization.

111122222111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112222211128.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111122222111210 its reverse (12111222221111), we get a palindrome (123233444332321).

The spelling of 111122222111210 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, two hundred ten".