21201200100222 has 8 divisors (see below), whose sum is σ = 42402400200456. Its totient is φ = 7067066700072.

The previous prime is 21201200100217. The next prime is 21201200100239. The reversal of 21201200100222 is 22200100210212.

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

21201200100222 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766766675013 + ... + 1766766675024.

It is an arithmetic number, because the mean of its divisors is an integer number (5300300025057).

Almost surely, 2^{21201200100222} is an apocalyptic number.

21201200100222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21201200100222 is a wasteful number, since it uses less digits than its factorization.

21201200100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533533350042.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21201200100222 its reverse (22200100210212), we get a palindrome (43401300310434).

The spelling of 21201200100222 in words is "twenty-one trillion, two hundred one billion, two hundred million, one hundred thousand, two hundred twenty-two".