12261901 has 2 divisors, whose sum is σ = 12261902. Its totient is φ = 12261900.

The previous prime is 12261889. The next prime is 12261919. The reversal of 12261901 is 10916221.

12261901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12257001 + 4900 = 3501^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 12261901 - 2¹¹ = 12259853 is a prime.

It is a super-2 number, since 2×12261901² = 300708432267602, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12261941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6130950 + 6130951.

It is an arithmetic number, because the mean of its divisors is an integer number (6130951).

Almost surely, 2^12261901 is an apocalyptic number.

It is an amenable number.

12261901 is a deficient number, since it is larger than the sum of its proper divisors (1).

12261901 is an equidigital number, since it uses as much as digits as its factorization.

12261901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 12261901 is about 3501.6997301311. The cubic root of 12261901 is about 230.5964418728.

The spelling of 12261901 in words is "twelve million, two hundred sixty-one thousand, nine hundred one".