202401217 has 2 divisors, whose sum is σ = 202401218. Its totient is φ = 202401216.

The previous prime is 202401203. The next prime is 202401271. The reversal of 202401217 is 712104202.

It is a happy number.

Together with next prime (202401271) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130507776 + 71893441 = 11424^2 + 8479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202401217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202401194 and 202401203.

It is not a weakly prime, because it can be changed into another prime (202402217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101200608 + 101200609.

It is an arithmetic number, because the mean of its divisors is an integer number (101200609).

Almost surely, 2^202401217 is an apocalyptic number.

It is an amenable number.

202401217 is a deficient number, since it is larger than the sum of its proper divisors (1).

202401217 is an equidigital number, since it uses as much as digits as its factorization.

202401217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 202401217 is about 14226.7781665421. The cubic root of 202401217 is about 587.1346436394.

Adding to 202401217 its reverse (712104202), we get a palindrome (914505419).

The spelling of 202401217 in words is "two hundred two million, four hundred one thousand, two hundred seventeen".