1201111 has 2 divisors, whose sum is σ = 1201112. Its totient is φ = 1201110.

The previous prime is 1201103. The next prime is 1201117. The reversal of 1201111 is 1111021.

It is a strong prime.

It is an emirp because it is prime and its reverse (1111021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201111 - 2³ = 1201103 is a prime.

1201111 is a modest number, since divided by 1111 gives 120 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1201094 and 1201103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600555 + 600556.

It is an arithmetic number, because the mean of its divisors is an integer number (600556).

2^1201111 is an apocalyptic number.

1201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201111 is an equidigital number, since it uses as much as digits as its factorization.

1201111 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 1201111 is about 1095.9520974933. The cubic root of 1201111 is about 106.2986416268.

Adding to 1201111 its reverse (1111021), we get a palindrome (2312132).

Multiplying 1201111 by its reverse (1111021), we get a palindrome (1334459544331).

The spelling of 1201111 in words is "one million, two hundred one thousand, one hundred eleven".