2533332221 has 4 divisors (see below), whose sum is σ = 2895236832. Its totient is φ = 2171427612.

The previous prime is 2533332211. The next prime is 2533332251. The reversal of 2533332221 is 1222333352.

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 not a de Polignac number, because 2533332221 - 2⁶ = 2533332157 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 (2533332211) 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, 180952295 + ... + 180952308.

It is an arithmetic number, because the mean of its divisors is an integer number (723809208).

Almost surely, 2^2533332221 is an apocalyptic number.

It is an amenable number.

2533332221 is a deficient number, since it is larger than the sum of its proper divisors (361904611).

2533332221 is an equidigital number, since it uses as much as digits as its factorization.

2533332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361904610.

The product of its digits is 6480, while the sum is 26.

The square root of 2533332221 is about 50332.2185185593. The cubic root of 2533332221 is about 1363.2140357005.

Adding to 2533332221 its reverse (1222333352), we get a palindrome (3755665573).

The spelling of 2533332221 in words is "two billion, five hundred thirty-three million, three hundred thirty-two thousand, two hundred twenty-one".