111121221101210 has 32 divisors (see below), whose sum is σ = 200241568081152. Its totient is φ = 44398852505280.

The previous prime is 111121221101203. The next prime is 111121221101221. The reversal of 111121221101210 is 12101122121111.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731885264 + ... + 732037076.

It is an arithmetic number, because the mean of its divisors is an integer number (6257549002536).

Almost surely, 2^{111121221101210} is an apocalyptic number.

111121221101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111121221101210 is a deficient number, since it is larger than the sum of its proper divisors (89120346979942).

111121221101210 is a wasteful number, since it uses less digits than its factorization.

111121221101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233078.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111121221101210 its reverse (12101122121111), we get a palindrome (123222343222321).

The spelling of 111121221101210 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, two hundred ten".