21233322004 has 12 divisors (see below), whose sum is σ = 37218542004. Its totient is φ = 10599452864.

The previous prime is 21233321987. The next prime is 21233322007. The reversal of 21233322004 is 40022333212.

It can be written as a sum of positive squares in 2 ways, for example, as 6790089604 + 14443232400 = 82402^2 + 120180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233322007) 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, 4299259 + ... + 4304194.

It is an arithmetic number, because the mean of its divisors is an integer number (3101545167).

Almost surely, 2^21233322004 is an apocalyptic number.

It is an amenable number.

21233322004 is a deficient number, since it is larger than the sum of its proper divisors (15985220000).

21233322004 is a wasteful number, since it uses less digits than its factorization.

21233322004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604074 (or 8604072 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21233322004 its reverse (40022333212), we get a palindrome (61255655216).

The spelling of 21233322004 in words is "twenty-one billion, two hundred thirty-three million, three hundred twenty-two thousand, four".