12097901 has 4 divisors (see below), whose sum is σ = 12515100. Its totient is φ = 11680704.

The previous prime is 12097879. The next prime is 12097909. The reversal of 12097901 is 10979021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10979021 = 41 ⋅267781.

It can be written as a sum of positive squares in 2 ways, for example, as 9156676 + 2941225 = 3026^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 12097901 - 2⁶ = 12097837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 417169 = 12097901 / (1 + 2 + 0 + 9 + 7 + 9 + 0 + 1).

It is a Duffinian number.

It is a plaindrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12097909) 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 in 3 ways as a sum of consecutive naturals, for example, 208556 + ... + 208613.

It is an arithmetic number, because the mean of its divisors is an integer number (3128775).

Almost surely, 2^12097901 is an apocalyptic number.

12097901 is the 1556-th centered decagonal number.

It is an amenable number.

12097901 is a deficient number, since it is larger than the sum of its proper divisors (417199).

12097901 is an equidigital number, since it uses as much as digits as its factorization.

12097901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417198.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 12097901 is about 3478.2037030628. The cubic root of 12097901 is about 229.5637667068.

It can be divided in two parts, 1 and 2097901, that added together give a palindrome (2097902).

The spelling of 12097901 in words is "twelve million, ninety-seven thousand, nine hundred one".