7111121 has 8 divisors (see below), whose sum is σ = 7385088. Its totient is φ = 6840000.

The previous prime is 7111103. The next prime is 7111123. The reversal of 7111121 is 1211117.

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 7111121 - 2⁶ = 7111057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7111096 and 7111105.

It is not an unprimeable number, because it can be changed into a prime (7111123) 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, 5321 + ... + 6521.

It is an arithmetic number, because the mean of its divisors is an integer number (923136).

Almost surely, 2^7111121 is an apocalyptic number.

It is an amenable number.

7111121 is a deficient number, since it is larger than the sum of its proper divisors (273967).

7111121 is a wasteful number, since it uses less digits than its factorization.

7111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423.

The product of its digits is 14, while the sum is 14.

The square root of 7111121 is about 2666.6685208327. The cubic root of 7111121 is about 192.3000318466.

Adding to 7111121 its reverse (1211117), we get a palindrome (8322238).

The spelling of 7111121 in words is "seven million, one hundred eleven thousand, one hundred twenty-one".