120111221111 has 8 divisors (see below), whose sum is σ = 138629076384. Its totient is φ = 101933143200.

The previous prime is 120111221077. The next prime is 120111221117. The reversal of 120111221111 is 111122111021.

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

It is not a de Polignac number, because 120111221111 - 2²² = 120107026807 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 (120111221117) 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, 84943580 + ... + 84944993.

It is an arithmetic number, because the mean of its divisors is an integer number (17328634548).

Almost surely, 2^120111221111 is an apocalyptic number.

120111221111 is a deficient number, since it is larger than the sum of its proper divisors (18517855273).

120111221111 is a wasteful number, since it uses less digits than its factorization.

120111221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169888681.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 120111221111 its reverse (111122111021), we get a palindrome (231233332132).

The spelling of 120111221111 in words is "one hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, one hundred eleven".