22112200011221 has 16 divisors (see below), whose sum is σ = 22368820166784. Its totient is φ = 21856404751104.

The previous prime is 22112200011203. The next prime is 22112200011259. The reversal of 22112200011221 is 12211000221122.

It is a cyclic number.

It is not a de Polignac number, because 22112200011221 - 2⁶ = 22112200011157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22112200011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112200017221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258800510 + ... + 258885936.

It is an arithmetic number, because the mean of its divisors is an integer number (1398051260424).

Almost surely, 2^{22112200011221} is an apocalyptic number.

It is an amenable number.

22112200011221 is a deficient number, since it is larger than the sum of its proper divisors (256620155563).

22112200011221 is a wasteful number, since it uses less digits than its factorization.

22112200011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90220.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22112200011221 its reverse (12211000221122), we get a palindrome (34323200232343).

The spelling of 22112200011221 in words is "twenty-two trillion, one hundred twelve billion, two hundred million, eleven thousand, two hundred twenty-one".