402221233 has 4 divisors (see below), whose sum is σ = 403380720. Its totient is φ = 401061748.

The previous prime is 402221189. The next prime is 402221257. The reversal of 402221233 is 332122204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402221233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402221233.

It is not an unprimeable number, because it can be changed into a prime (402221273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579223 + ... + 579916.

It is an arithmetic number, because the mean of its divisors is an integer number (100845180).

Almost surely, 2^402221233 is an apocalyptic number.

It is an amenable number.

402221233 is a deficient number, since it is larger than the sum of its proper divisors (1159487).

402221233 is a wasteful number, since it uses less digits than its factorization.

402221233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159486.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 402221233 is about 20055.4539464955. The cubic root of 402221233 is about 738.1676316891.

Adding to 402221233 its reverse (332122204), we get a palindrome (734343437).

The spelling of 402221233 in words is "four hundred two million, two hundred twenty-one thousand, two hundred thirty-three".