21113332222 has 4 divisors (see below), whose sum is σ = 31669998336. Its totient is φ = 10556666110.

The previous prime is 21113332169. The next prime is 21113332249. The reversal of 21113332222 is 22223331112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21113332193 and 21113332202.

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, 5278333054 + ... + 5278333057.

It is an arithmetic number, because the mean of its divisors is an integer number (7917499584).

Almost surely, 2^21113332222 is an apocalyptic number.

21113332222 is a deficient number, since it is larger than the sum of its proper divisors (10556666114).

21113332222 is a wasteful number, since it uses less digits than its factorization.

21113332222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10556666113.

The product of its digits is 864, while the sum is 22.

Adding to 21113332222 its reverse (22223331112), we get a palindrome (43336663334).

It can be divided in two parts, 2111 and 3332222, that added together give a palindrome (3334333).

The spelling of 21113332222 in words is "twenty-one billion, one hundred thirteen million, three hundred thirty-two thousand, two hundred twenty-two".