21220303003 has 8 divisors (see below), whose sum is σ = 21347787168. Its totient is φ = 21092874624.

The previous prime is 21220302973. The next prime is 21220303037. The reversal of 21220303003 is 30030302212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21220303003 - 2¹³ = 21220294811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21220304003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945075 + ... + 967267.

It is an arithmetic number, because the mean of its divisors is an integer number (2668473396).

Almost surely, 2^21220303003 is an apocalyptic number.

21220303003 is a deficient number, since it is larger than the sum of its proper divisors (127484165).

21220303003 is a wasteful number, since it uses less digits than its factorization.

21220303003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27893.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 21220303003 its reverse (30030302212), we get a palindrome (51250605215).

The spelling of 21220303003 in words is "twenty-one billion, two hundred twenty million, three hundred three thousand, three".