12022531 has 2 divisors, whose sum is σ = 12022532. Its totient is φ = 12022530.

The previous prime is 12022511. The next prime is 12022561. The reversal of 12022531 is 13522021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12022531 - 2⁹ = 12022019 is a prime.

It is a super-2 number, since 2×12022531² = 289082503291922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12022511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6011265 + 6011266.

It is an arithmetic number, because the mean of its divisors is an integer number (6011266).

Almost surely, 2^12022531 is an apocalyptic number.

12022531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12022531 is an equidigital number, since it uses as much as digits as its factorization.

12022531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12022531 is about 3467.3521597899. The cubic root of 12022531 is about 229.0860453522.

Adding to 12022531 its reverse (13522021), we get a palindrome (25544552).

The spelling of 12022531 in words is "twelve million, twenty-two thousand, five hundred thirty-one".