21222021023303 has 4 divisors (see below), whose sum is σ = 21222031073760. Its totient is φ = 21222010972848.

The previous prime is 21222021023299. The next prime is 21222021023311. The reversal of 21222021023303 is 30332012022212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21222021023303 - 2² = 21222021023299 is a prime.

It is a super-2 number, since 2×21222021023303² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222021023363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498950 + ... + 6533987.

It is an arithmetic number, because the mean of its divisors is an integer number (5305507768440).

Almost surely, 2^{21222021023303} is an apocalyptic number.

21222021023303 is a deficient number, since it is larger than the sum of its proper divisors (10050457).

21222021023303 is an equidigital number, since it uses as much as digits as its factorization.

21222021023303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050456.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21222021023303 its reverse (30332012022212), we get a palindrome (51554033045515).

The spelling of 21222021023303 in words is "twenty-one trillion, two hundred twenty-two billion, twenty-one million, twenty-three thousand, three hundred three".