12400201 has 6 divisors (see below), whose sum is σ = 13630106. Its totient is φ = 11272800.

The previous prime is 12400183. The next prime is 12400231. The reversal of 12400201 is 10200421.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 9801 = 3520^2 + 99^2 .

It is not a de Polignac number, because 12400201 - 2⁵ = 12400169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12400231) 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 5 ways as a sum of consecutive naturals, for example, 51120 + ... + 51361.

Almost surely, 2^12400201 is an apocalyptic number.

12400201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12400201 is a deficient number, since it is larger than the sum of its proper divisors (1229905).

12400201 is a wasteful number, since it uses less digits than its factorization.

12400201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102503 (or 102492 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 12400201 is about 3521.3919122983. The cubic root of 12400201 is about 231.4601560706.

Adding to 12400201 its reverse (10200421), we get a palindrome (22600622).

The spelling of 12400201 in words is "twelve million, four hundred thousand, two hundred one".