111212221221199 has 8 divisors (see below), whose sum is σ = 127952699392800. Its totient is φ = 94684997548896.

The previous prime is 111212221221191. The next prime is 111212221221203. The reversal of 111212221221199 is 991122122212111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 111212221221199 - 2³ = 111212221221191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212221221191) 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, 53313623704 + ... + 53313625789.

It is an arithmetic number, because the mean of its divisors is an integer number (15994087424100).

Almost surely, 2^{111212221221199} is an apocalyptic number.

111212221221199 is a deficient number, since it is larger than the sum of its proper divisors (16740478171601).

111212221221199 is a wasteful number, since it uses less digits than its factorization.

111212221221199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106627249649.

The product of its digits is 5184, while the sum is 37.

The spelling of 111212221221199 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred ninety-nine".