120011111 has 8 divisors (see below), whose sum is σ = 132499584. Its totient is φ = 107785720.

The previous prime is 120011057. The next prime is 120011119. The reversal of 120011111 is 111110021.

It is a happy number.

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 120011111 - 2¹⁰ = 120010087 is a prime.

It is a Duffinian number.

120011111 is a modest number, since divided by 11111 gives 1200 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011119) 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, 64811 + ... + 66636.

It is an arithmetic number, because the mean of its divisors is an integer number (16562448).

Almost surely, 2^120011111 is an apocalyptic number.

120011111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120011111 is a deficient number, since it is larger than the sum of its proper divisors (12488473).

120011111 is a wasteful number, since it uses less digits than its factorization.

120011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131541.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 120011111 is about 10954.9582838092. The cubic root of 120011111 is about 493.2576377754.

Adding to 120011111 its reverse (111110021), we get a palindrome (231121132).

The spelling of 120011111 in words is "one hundred twenty million, eleven thousand, one hundred eleven".