111222121222111 has 8 divisors (see below), whose sum is σ = 112330874896848. Its totient is φ = 110113515480000.

The previous prime is 111222121222013. The next prime is 111222121222153.

111222121222111 is nontrivially palindromic in base 10.

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 111222121222111 - 2³⁷ = 111084682268639 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 (111222121222411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35471670 + ... + 38479651.

It is an arithmetic number, because the mean of its divisors is an integer number (14041359362106).

Almost surely, 2^{111222121222111} is an apocalyptic number.

111222121222111 is a deficient number, since it is larger than the sum of its proper divisors (1108753674737).

111222121222111 is a wasteful number, since it uses less digits than its factorization.

111222121222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73966313.

The product of its digits is 128, while the sum is 22.

The spelling of 111222121222111 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred eleven".