22120212200221 has 4 divisors (see below), whose sum is σ = 22225047329344. Its totient is φ = 22015377071100.

The previous prime is 22120212200189. The next prime is 22120212200257. The reversal of 22120212200221 is 12200221202122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22120212200221 - 2⁵ = 22120212200189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120212200321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52417564245 + ... + 52417564666.

It is an arithmetic number, because the mean of its divisors is an integer number (5556261832336).

Almost surely, 2^{22120212200221} is an apocalyptic number.

It is an amenable number.

22120212200221 is a deficient number, since it is larger than the sum of its proper divisors (104835129123).

22120212200221 is a wasteful number, since it uses less digits than its factorization.

22120212200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104835129122.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22120212200221 its reverse (12200221202122), we get a palindrome (34320433402343).

The spelling of 22120212200221 in words is "twenty-two trillion, one hundred twenty billion, two hundred twelve million, two hundred thousand, two hundred twenty-one".