21221113223302 has 4 divisors (see below), whose sum is σ = 31831669834956. Its totient is φ = 10610556611650.

The previous prime is 21221113223287. The next prime is 21221113223357. The reversal of 21221113223302 is 20332231112212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5305278305824 + ... + 5305278305827.

It is an arithmetic number, because the mean of its divisors is an integer number (7957917458739).

Almost surely, 2^{21221113223302} is an apocalyptic number.

21221113223302 is a deficient number, since it is larger than the sum of its proper divisors (10610556611654).

21221113223302 is a wasteful number, since it uses less digits than its factorization.

21221113223302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10610556611653.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21221113223302 its reverse (20332231112212), we get a palindrome (41553344335514).

The spelling of 21221113223302 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred thirteen million, two hundred twenty-three thousand, three hundred two".