21220201003 has 16 divisors (see below), whose sum is σ = 22424159232. Its totient is φ = 20052396000.

The previous prime is 21220200931. The next prime is 21220201031. The reversal of 21220201003 is 30010202212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21220201003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220201043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316068 + ... + 377278.

It is an arithmetic number, because the mean of its divisors is an integer number (1401509952).

Almost surely, 2^21220201003 is an apocalyptic number.

21220201003 is a deficient number, since it is larger than the sum of its proper divisors (1203958229).

21220201003 is a wasteful number, since it uses less digits than its factorization.

21220201003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61506.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21220201003 its reverse (30010202212), we get a palindrome (51230403215).

The spelling of 21220201003 in words is "twenty-one billion, two hundred twenty million, two hundred one thousand, three".