21333230230 has 32 divisors (see below), whose sum is σ = 42471321984. Its totient is φ = 7663994496.

The previous prime is 21333230209. The next prime is 21333230239. The reversal of 21333230230 is 3203233312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333230239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2212782 + ... + 2222401.

It is an arithmetic number, because the mean of its divisors is an integer number (1327228812).

Almost surely, 2^21333230230 is an apocalyptic number.

21333230230 is a deficient number, since it is larger than the sum of its proper divisors (21138091754).

21333230230 is a wasteful number, since it uses less digits than its factorization.

21333230230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435240.

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 21333230230 its reverse (3203233312), we get a palindrome (24536463542).

The spelling of 21333230230 in words is "twenty-one billion, three hundred thirty-three million, two hundred thirty thousand, two hundred thirty".