21232220303 has 16 divisors (see below), whose sum is σ = 24596965440. Its totient is φ = 17951712000.

The previous prime is 21232220279. The next prime is 21232220459. The reversal of 21232220303 is 30302223212.

It is a cyclic number.

It is not a de Polignac number, because 21232220303 - 2⁸ = 21232220047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232222303) 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, 134363 + ... + 246003.

It is an arithmetic number, because the mean of its divisors is an integer number (1537310340).

Almost surely, 2^21232220303 is an apocalyptic number.

21232220303 is a deficient number, since it is larger than the sum of its proper divisors (3364745137).

21232220303 is a wasteful number, since it uses less digits than its factorization.

21232220303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112018.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21232220303 its reverse (30302223212), we get a palindrome (51534443515).

The spelling of 21232220303 in words is "twenty-one billion, two hundred thirty-two million, two hundred twenty thousand, three hundred three".