1111121 has 8 divisors (see below), whose sum is σ = 1227744. Its totient is φ = 997120.

The previous prime is 1111091. The next prime is 1111151. The reversal of 1111121 is 1211111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1111091) and next prime (1111151).

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 1111121 - 2⁶ = 1111057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1111099 and 1111108.

It is not an unprimeable number, because it can be changed into a prime (1111151) 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, 305 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (153468).

2^1111121 is an apocalyptic number.

1111121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111121 is a deficient number, since it is larger than the sum of its proper divisors (116623).

1111121 is a wasteful number, since it uses less digits than its factorization.

1111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311.

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

The square root of 1111121 is about 1054.0972440909. The cubic root of 1111121 is about 103.5747241350.

Adding to 1111121 its reverse (1211111), we get a palindrome (2322232).

It can be divided in two parts, 1111 and 121, that multiplied together give a palindrome (134431).

The spelling of 1111121 in words is "one million, one hundred eleven thousand, one hundred twenty-one".