12225901 has 2 divisors, whose sum is σ = 12225902. Its totient is φ = 12225900.

The previous prime is 12225887. The next prime is 12225919. The reversal of 12225901 is 10952221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6708100 + 5517801 = 2590^2 + 2349^2 .

It is a cyclic number.

It is not a de Polignac number, because 12225901 - 2¹¹ = 12223853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12225991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112950 + 6112951.

It is an arithmetic number, because the mean of its divisors is an integer number (6112951).

Almost surely, 2^12225901 is an apocalyptic number.

It is an amenable number.

12225901 is a deficient number, since it is larger than the sum of its proper divisors (1).

12225901 is an equidigital number, since it uses as much as digits as its factorization.

12225901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 12225901 is about 3496.5555908637. Note that the first 4 decimals coincide. The cubic root of 12225901 is about 230.3705495106.

The spelling of 12225901 in words is "twelve million, two hundred twenty-five thousand, nine hundred one".