21011200202222 has 16 divisors (see below), whose sum is σ = 31521882069744. Its totient is φ = 10503906336000.

The previous prime is 21011200202183. The next prime is 21011200202323. The reversal of 21011200202222 is 22220200211012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21011200202222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442121822 + ... + 442169342.

It is an arithmetic number, because the mean of its divisors is an integer number (1970117629359).

Almost surely, 2^{21011200202222} is an apocalyptic number.

21011200202222 is a deficient number, since it is larger than the sum of its proper divisors (10510681867522).

21011200202222 is a wasteful number, since it uses less digits than its factorization.

21011200202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78515.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21011200202222 its reverse (22220200211012), we get a palindrome (43231400413234).

The spelling of 21011200202222 in words is "twenty-one trillion, eleven billion, two hundred million, two hundred two thousand, two hundred twenty-two".