641222333 has 4 divisors (see below), whose sum is σ = 641322528. Its totient is φ = 641122140.

The previous prime is 641222311. The next prime is 641222347. The reversal of 641222333 is 333222146.

641222333 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 333222146 = 2 ⋅166611073.

It is a cyclic number.

It is not a de Polignac number, because 641222333 - 2⁸ = 641222077 is a prime.

It is a super-2 number, since 2×641222333² = 822332160675925778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641222353) 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, 39791 + ... + 53532.

It is an arithmetic number, because the mean of its divisors is an integer number (160330632).

Almost surely, 2^641222333 is an apocalyptic number.

It is an amenable number.

641222333 is a deficient number, since it is larger than the sum of its proper divisors (100195).

641222333 is an equidigital number, since it uses as much as digits as its factorization.

641222333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100194.

The product of its digits is 5184, while the sum is 26.

The square root of 641222333 is about 25322.3682344286. The cubic root of 641222333 is about 862.3221597347.

Adding to 641222333 its reverse (333222146), we get a palindrome (974444479).

The spelling of 641222333 in words is "six hundred forty-one million, two hundred twenty-two thousand, three hundred thirty-three".