21232223330 has 16 divisors (see below), whose sum is σ = 39450841344. Its totient is φ = 8218925040.

The previous prime is 21232223317. The next prime is 21232223377. The reversal of 21232223330 is 3332223212.

It is a junction number, because it is equal to n+sod(n) for n = 21232223296 and 21232223305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34245212 + ... + 34245831.

It is an arithmetic number, because the mean of its divisors is an integer number (2465677584).

Almost surely, 2^21232223330 is an apocalyptic number.

21232223330 is a deficient number, since it is larger than the sum of its proper divisors (18218618014).

21232223330 is a wasteful number, since it uses less digits than its factorization.

21232223330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68491081.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21232223330 its reverse (3332223212), we get a palindrome (24564446542).

The spelling of 21232223330 in words is "twenty-one billion, two hundred thirty-two million, two hundred twenty-three thousand, three hundred thirty".