21022333233 has 8 divisors (see below), whose sum is σ = 30577939296. Its totient is φ = 12740808000.

The previous prime is 21022333223. The next prime is 21022333237. The reversal of 21022333233 is 33233322012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21022333233 - 2⁶ = 21022333169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022333237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318520168 + ... + 318520233.

It is an arithmetic number, because the mean of its divisors is an integer number (3822242412).

Almost surely, 2^21022333233 is an apocalyptic number.

It is an amenable number.

21022333233 is a deficient number, since it is larger than the sum of its proper divisors (9555606063).

21022333233 is a wasteful number, since it uses less digits than its factorization.

21022333233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637040415.

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 21022333233 its reverse (33233322012), we get a palindrome (54255655245).

The spelling of 21022333233 in words is "twenty-one billion, twenty-two million, three hundred thirty-three thousand, two hundred thirty-three".