21220140303 has 12 divisors (see below), whose sum is σ = 31020607800. Its totient is φ = 13976316816.

The previous prime is 21220140289. The next prime is 21220140307. The reversal of 21220140303 is 30304102212.

21220140303 is a `hidden beast` number, since 2 + 1 + 220 + 140 + 303 = 666.

It is not a de Polignac number, because 21220140303 - 2¹³ = 21220132111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220140307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14202828 + ... + 14204321.

It is an arithmetic number, because the mean of its divisors is an integer number (2585050650).

Almost surely, 2^21220140303 is an apocalyptic number.

21220140303 is a deficient number, since it is larger than the sum of its proper divisors (9800467497).

21220140303 is a wasteful number, since it uses less digits than its factorization.

21220140303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28407238 (or 28407235 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21220140303 its reverse (30304102212), we get a palindrome (51524242515).

The spelling of 21220140303 in words is "twenty-one billion, two hundred twenty million, one hundred forty thousand, three hundred three".