22100211200221 has 32 divisors (see below), whose sum is σ = 27738224640000. Its totient is φ = 17105515632000.

The previous prime is 22100211200219. The next prime is 22100211200233. The reversal of 22100211200221 is 12200211200122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22100211200221 - 2¹ = 22100211200219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22100211200195 and 22100211200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100211200201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157789780 + ... + 157929778.

It is an arithmetic number, because the mean of its divisors is an integer number (866819520000).

Almost surely, 2^{22100211200221} is an apocalyptic number.

It is an amenable number.

22100211200221 is a deficient number, since it is larger than the sum of its proper divisors (5638013439779).

22100211200221 is a wasteful number, since it uses less digits than its factorization.

22100211200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153745.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22100211200221 its reverse (12200211200122), we get a palindrome (34300422400343).

Subtracting from 22100211200221 its reverse (12200211200122), we obtain a palindrome (9900000000099).

The spelling of 22100211200221 in words is "twenty-two trillion, one hundred billion, two hundred eleven million, two hundred thousand, two hundred twenty-one".