21113023222 has 8 divisors (see below), whose sum is σ = 31670172000. Its totient is φ = 10556299224.

The previous prime is 21113023189. The next prime is 21113023229. The reversal of 21113023222 is 22232031112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21113023222² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21113023222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113023229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92179 + ... + 225217.

It is an arithmetic number, because the mean of its divisors is an integer number (3958771500).

Almost surely, 2^21113023222 is an apocalyptic number.

21113023222 is a deficient number, since it is larger than the sum of its proper divisors (10557148778).

21113023222 is a wasteful number, since it uses less digits than its factorization.

21113023222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212390.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21113023222 its reverse (22232031112), we get a palindrome (43345054334).

The spelling of 21113023222 in words is "twenty-one billion, one hundred thirteen million, twenty-three thousand, two hundred twenty-two".