21332213222 has 4 divisors (see below), whose sum is σ = 31998319836. Its totient is φ = 10666106610.

The previous prime is 21332213209. The next prime is 21332213249. The reversal of 21332213222 is 22231223312.

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, 5333053304 + ... + 5333053307.

It is an arithmetic number, because the mean of its divisors is an integer number (7999579959).

Almost surely, 2^21332213222 is an apocalyptic number.

21332213222 is a deficient number, since it is larger than the sum of its proper divisors (10666106614).

21332213222 is a wasteful number, since it uses less digits than its factorization.

21332213222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10666106613.

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

Adding to 21332213222 its reverse (22231223312), we get a palindrome (43563436534).

The spelling of 21332213222 in words is "twenty-one billion, three hundred thirty-two million, two hundred thirteen thousand, two hundred twenty-two".