21211301203 has 8 divisors (see below), whose sum is σ = 21561949440. Its totient is φ = 20863149120.

The previous prime is 21211301197. The next prime is 21211301227. The reversal of 21211301203 is 30210311212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21211301203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21211301233) 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, 606900 + ... + 640897.

It is an arithmetic number, because the mean of its divisors is an integer number (2695243680).

Almost surely, 2^21211301203 is an apocalyptic number.

21211301203 is a deficient number, since it is larger than the sum of its proper divisors (350648237).

21211301203 is a wasteful number, since it uses less digits than its factorization.

21211301203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248077.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21211301203 its reverse (30210311212), we get a palindrome (51421612415).

The spelling of 21211301203 in words is "twenty-one billion, two hundred eleven million, three hundred one thousand, two hundred three".