402221335 has 4 divisors (see below), whose sum is σ = 482665608. Its totient is φ = 321777064.

The previous prime is 402221333. The next prime is 402221359. The reversal of 402221335 is 533122204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402221335 - 2¹ = 402221333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402221333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40222129 + ... + 40222138.

It is an arithmetic number, because the mean of its divisors is an integer number (120666402).

Almost surely, 2^402221335 is an apocalyptic number.

402221335 is a deficient number, since it is larger than the sum of its proper divisors (80444273).

402221335 is an equidigital number, since it uses as much as digits as its factorization.

402221335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80444272.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 402221335 is about 20055.4564894445. The cubic root of 402221335 is about 738.1676940868.

Adding to 402221335 its reverse (533122204), we get a palindrome (935343539).

The spelling of 402221335 in words is "four hundred two million, two hundred twenty-one thousand, three hundred thirty-five".