21102210200222 has 16 divisors (see below), whose sum is σ = 33515500036752. Its totient is φ = 9930385188480.

The previous prime is 21102210200221. The next prime is 21102210200233. The reversal of 21102210200222 is 22200201220112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 21102210200222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102210200221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3253388 + ... + 7265600.

It is an arithmetic number, because the mean of its divisors is an integer number (2094718752297).

Almost surely, 2^{21102210200222} is an apocalyptic number.

21102210200222 is a deficient number, since it is larger than the sum of its proper divisors (12413289836530).

21102210200222 is a wasteful number, since it uses less digits than its factorization.

21102210200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166923.

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

Adding to 21102210200222 its reverse (22200201220112), we get a palindrome (43302411420334).

The spelling of 21102210200222 in words is "twenty-one trillion, one hundred two billion, two hundred ten million, two hundred thousand, two hundred twenty-two".