7122331 has 2 divisors, whose sum is σ = 7122332. Its totient is φ = 7122330.

The previous prime is 7122319. The next prime is 7122361. The reversal of 7122331 is 1332217.

It is a weak prime.

It is an emirp because it is prime and its reverse (1332217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7122331 - 2⁹ = 7121819 is a prime.

It is a super-2 number, since 2×7122331² = 101455197747122, which contains 22 as substring.

7122331 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7122299 and 7122308.

It is not a weakly prime, because it can be changed into another prime (7122361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3561165 + 3561166.

It is an arithmetic number, because the mean of its divisors is an integer number (3561166).

Almost surely, 2^7122331 is an apocalyptic number.

7122331 is a deficient number, since it is larger than the sum of its proper divisors (1).

7122331 is an equidigital number, since it uses as much as digits as its factorization.

7122331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 19.

The square root of 7122331 is about 2668.7695666730. The cubic root of 7122331 is about 192.4010263127.

Adding to 7122331 its reverse (1332217), we get a palindrome (8454548).

The spelling of 7122331 in words is "seven million, one hundred twenty-two thousand, three hundred thirty-one".