21102220200222 has 48 divisors (see below), whose sum is σ = 52760428531200. Its totient is φ = 5970669789456.

The previous prime is 21102220200203. The next prime is 21102220200253. The reversal of 21102220200222 is 22200202220112.

21102220200222 is a `hidden beast` number, since 21 + 1 + 0 + 2 + 220 + 200 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21102220200195 and 21102220200204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 812986722 + ... + 813012677.

It is an arithmetic number, because the mean of its divisors is an integer number (1099175594400).

Almost surely, 2^{21102220200222} is an apocalyptic number.

21102220200222 is an abundant number, since it is smaller than the sum of its proper divisors (31658208330978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102220200222 is a wasteful number, since it uses less digits than its factorization.

21102220200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625999517 (or 1625999514 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21102220200222 its reverse (22200202220112), we get a palindrome (43302422420334).

The spelling of 21102220200222 in words is "twenty-one trillion, one hundred two billion, two hundred twenty million, two hundred thousand, two hundred twenty-two".