21213220211003 has 8 divisors (see below), whose sum is σ = 21411524630496. Its totient is φ = 21015807048000.

The previous prime is 21213220210961. The next prime is 21213220211011. The reversal of 21213220211003 is 30011202231212.

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 21213220211003 - 2¹² = 21213220206907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21213220211033) 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, 222766298 + ... + 222861503.

It is an arithmetic number, because the mean of its divisors is an integer number (2676440578812).

Almost surely, 2^{21213220211003} is an apocalyptic number.

21213220211003 is a deficient number, since it is larger than the sum of its proper divisors (198304419493).

21213220211003 is a wasteful number, since it uses less digits than its factorization.

21213220211003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445628245.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21213220211003 its reverse (30011202231212), we get a palindrome (51224422442215).

The spelling of 21213220211003 in words is "twenty-one trillion, two hundred thirteen billion, two hundred twenty million, two hundred eleven thousand, three".