21303322233 has 16 divisors (see below), whose sum is σ = 29517504000. Its totient is φ = 13651827840.

The previous prime is 21303322199. The next prime is 21303322237. The reversal of 21303322233 is 33222330312.

It is not a de Polignac number, because 21303322233 - 2¹³ = 21303314041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21303322237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 754828 + ... + 782541.

It is an arithmetic number, because the mean of its divisors is an integer number (1844844000).

Almost surely, 2^21303322233 is an apocalyptic number.

It is an amenable number.

21303322233 is a deficient number, since it is larger than the sum of its proper divisors (8214181767).

21303322233 is a wasteful number, since it uses less digits than its factorization.

21303322233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537552.

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

Adding to 21303322233 its reverse (33222330312), we get a palindrome (54525652545).

The spelling of 21303322233 in words is "twenty-one billion, three hundred three million, three hundred twenty-two thousand, two hundred thirty-three".