21414220303 has 4 divisors (see below), whose sum is σ = 24473394640. Its totient is φ = 18355045968.

The previous prime is 21414220301. The next prime is 21414220349. The reversal of 21414220303 is 30302241412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21414220303 - 2¹ = 21414220301 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 (21414220301) 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 3 ways as a sum of consecutive naturals, for example, 1529587158 + ... + 1529587171.

It is an arithmetic number, because the mean of its divisors is an integer number (6118348660).

Almost surely, 2^21414220303 is an apocalyptic number.

21414220303 is a deficient number, since it is larger than the sum of its proper divisors (3059174337).

21414220303 is an equidigital number, since it uses as much as digits as its factorization.

21414220303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059174336.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21414220303 its reverse (30302241412), we get a palindrome (51716461715).

The spelling of 21414220303 in words is "twenty-one billion, four hundred fourteen million, two hundred twenty thousand, three hundred three".