120000012111 has 30 divisors (see below), whose sum is σ = 208526105040. Its totient is φ = 68571433224.

The previous prime is 120000012107. The next prime is 120000012163. The reversal of 120000012111 is 111210000021.

It is a happy number.

It is not a de Polignac number, because 120000012111 - 2² = 120000012107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 120000012093 and 120000012102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120000012191) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 15113191 + ... + 15121128.

It is an arithmetic number, because the mean of its divisors is an integer number (6950870168).

Almost surely, 2^120000012111 is an apocalyptic number.

120000012111 is a deficient number, since it is larger than the sum of its proper divisors (88526092929).

120000012111 is an equidigital number, since it uses as much as digits as its factorization.

120000012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30234345 (or 30234329 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 120000012111 its reverse (111210000021), we get a palindrome (231210012132).

The spelling of 120000012111 in words is "one hundred twenty billion, twelve thousand, one hundred eleven".