120231111 has 32 divisors (see below), whose sum is σ = 215244288. Its totient is φ = 57651840.

The previous prime is 120231109. The next prime is 120231121. The reversal of 120231111 is 111132021.

It is not a de Polignac number, because 120231111 - 2¹ = 120231109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120231121) 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, 17016 + ... + 23021.

It is an arithmetic number, because the mean of its divisors is an integer number (6726384).

Almost surely, 2^120231111 is an apocalyptic number.

120231111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120231111 is a deficient number, since it is larger than the sum of its proper divisors (95013177).

120231111 is a wasteful number, since it uses less digits than its factorization.

120231111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40071.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 120231111 is about 10964.9948016404. The cubic root of 120231111 is about 493.5588611017.

Adding to 120231111 its reverse (111132021), we get a palindrome (231363132).

The spelling of 120231111 in words is "one hundred twenty million, two hundred thirty-one thousand, one hundred eleven".