12220031 has 2 divisors, whose sum is σ = 12220032. Its totient is φ = 12220030.

The previous prime is 12220003. The next prime is 12220037. The reversal of 12220031 is 13002221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12220031 - 2¹⁰ = 12219007 is a prime.

It is a super-2 number, since 2×12220031² = 298658315281922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12219994 and 12220021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110015 + 6110016.

It is an arithmetic number, because the mean of its divisors is an integer number (6110016).

Almost surely, 2^12220031 is an apocalyptic number.

12220031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220031 is an equidigital number, since it uses as much as digits as its factorization.

12220031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12220031 is about 3495.7160925910. The cubic root of 12220031 is about 230.3336744750. Note that the first 3 decimals are identical.

Adding to 12220031 its reverse (13002221), we get a palindrome (25222252).

The spelling of 12220031 in words is "twelve million, two hundred twenty thousand, thirty-one".