21000222233 has 8 divisors (see below), whose sum is σ = 21460360320. Its totient is φ = 20540639440.

The previous prime is 21000222227. The next prime is 21000222241. The reversal of 21000222233 is 33222200012.

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

It is a cyclic number.

It is not a de Polignac number, because 21000222233 - 2²² = 20996027929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000222253) 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, 61898 + ... + 214083.

It is an arithmetic number, because the mean of its divisors is an integer number (2682545040).

Almost surely, 2^21000222233 is an apocalyptic number.

It is an amenable number.

21000222233 is a deficient number, since it is larger than the sum of its proper divisors (460138087).

21000222233 is a wasteful number, since it uses less digits than its factorization.

21000222233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277647.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21000222233 its reverse (33222200012), we get a palindrome (54222422245).

The spelling of 21000222233 in words is "twenty-one billion, two hundred twenty-two thousand, two hundred thirty-three".