402002201 has 2 divisors, whose sum is σ = 402002202. Its totient is φ = 402002200.

The previous prime is 402002197. The next prime is 402002221. The reversal of 402002201 is 102200204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386161801 + 15840400 = 19651^2 + 3980^2 .

It is a cyclic number.

It is not a de Polignac number, because 402002201 - 2² = 402002197 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402002221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201001100 + 201001101.

It is an arithmetic number, because the mean of its divisors is an integer number (201001101).

Almost surely, 2^402002201 is an apocalyptic number.

It is an amenable number.

402002201 is a deficient number, since it is larger than the sum of its proper divisors (1).

402002201 is an equidigital number, since it uses as much as digits as its factorization.

402002201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 402002201 is about 20049.9925436395. The cubic root of 402002201 is about 738.0336161468.

Adding to 402002201 its reverse (102200204), we get a palindrome (504202405).

The spelling of 402002201 in words is "four hundred two million, two thousand, two hundred one".