120001200111 has 32 divisors (see below), whose sum is σ = 195067293120. Its totient is φ = 72453543552.

The previous prime is 120001200097. The next prime is 120001200113. The reversal of 120001200111 is 111002100021.

It is a happy number.

It is not a de Polignac number, because 120001200111 - 2⁹ = 120001199599 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 = 120001200093 and 120001200102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001200113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3206716 + ... + 3243921.

It is an arithmetic number, because the mean of its divisors is an integer number (6095852910).

Almost surely, 2^120001200111 is an apocalyptic number.

120001200111 is a deficient number, since it is larger than the sum of its proper divisors (75066093009).

120001200111 is a wasteful number, since it uses less digits than its factorization.

120001200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450712 (or 6450706 counting only the distinct ones).

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

Adding to 120001200111 its reverse (111002100021), we get a palindrome (231003300132).

The spelling of 120001200111 in words is "one hundred twenty billion, one million, two hundred thousand, one hundred eleven".