120001111 has 2 divisors, whose sum is σ = 120001112. Its totient is φ = 120001110.

The previous prime is 120001099. The next prime is 120001117. The reversal of 120001111 is 111100021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120001111 - 2¹¹ = 119999063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120001094 and 120001103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120001117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60000555 + 60000556.

It is an arithmetic number, because the mean of its divisors is an integer number (60000556).

Almost surely, 2^120001111 is an apocalyptic number.

120001111 is a deficient number, since it is larger than the sum of its proper divisors (1).

120001111 is an equidigital number, since it uses as much as digits as its factorization.

120001111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 120001111 is about 10954.5018599661. The cubic root of 120001111 is about 493.2439370623.

Adding to 120001111 its reverse (111100021), we get a palindrome (231101132).

The spelling of 120001111 in words is "one hundred twenty million, one thousand, one hundred eleven".