120111212111 has 8 divisors (see below), whose sum is σ = 131036742144. Its totient is φ = 109186736920.

The previous prime is 120111212093. The next prime is 120111212113. The reversal of 120111212111 is 111212111021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120111212111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111212113) 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, 15455 + ... + 490368.

It is an arithmetic number, because the mean of its divisors is an integer number (16379592768).

Almost surely, 2^120111212111 is an apocalyptic number.

120111212111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120111212111 is a deficient number, since it is larger than the sum of its proper divisors (10925530033).

120111212111 is a wasteful number, since it uses less digits than its factorization.

120111212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527421.

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

Adding to 120111212111 its reverse (111212111021), we get a palindrome (231323323132).

The spelling of 120111212111 in words is "one hundred twenty billion, one hundred eleven million, two hundred twelve thousand, one hundred eleven".