21222111110003 has 16 divisors (see below), whose sum is σ = 22513770794304. Its totient is φ = 19935272002560.

The previous prime is 21222111109999. The next prime is 21222111110063. The reversal of 21222111110003 is 30001111122212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21222111110003 - 2² = 21222111109999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222111110063) 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, 73875818 + ... + 74162528.

It is an arithmetic number, because the mean of its divisors is an integer number (1407110674644).

Almost surely, 2^{21222111110003} is an apocalyptic number.

21222111110003 is a deficient number, since it is larger than the sum of its proper divisors (1291659684301).

21222111110003 is a wasteful number, since it uses less digits than its factorization.

21222111110003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295102.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21222111110003 its reverse (30001111122212), we get a palindrome (51223222232215).

The spelling of 21222111110003 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred eleven million, one hundred ten thousand, three".