21220202003 has 72 divisors (see below), whose sum is σ = 30610545840. Its totient is φ = 14458227840.

The previous prime is 21220201999. The next prime is 21220202039. The reversal of 21220202003 is 30020202212.

It is not a de Polignac number, because 21220202003 - 2² = 21220201999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220202083) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2525333 + ... + 2533721.

It is an arithmetic number, because the mean of its divisors is an integer number (425146470).

Almost surely, 2^21220202003 is an apocalyptic number.

21220202003 is a deficient number, since it is larger than the sum of its proper divisors (9390343837).

21220202003 is a wasteful number, since it uses less digits than its factorization.

21220202003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8465 (or 8439 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 21220202003 its reverse (30020202212), we get a palindrome (51240404215).

The spelling of 21220202003 in words is "twenty-one billion, two hundred twenty million, two hundred two thousand, three".