22201200112221 has 64 divisors (see below), whose sum is σ = 35485131306240. Its totient is φ = 13637444186880.

The previous prime is 22201200112207. The next prime is 22201200112237. The reversal of 22201200112221 is 12221100210222.

It is a happy number.

It is not a de Polignac number, because 22201200112221 - 2²² = 22201195917917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22201200112194 and 22201200112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201200112241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 937657635 + ... + 937681311.

It is an arithmetic number, because the mean of its divisors is an integer number (554455176660).

Almost surely, 2^{22201200112221} is an apocalyptic number.

It is an amenable number.

22201200112221 is a deficient number, since it is larger than the sum of its proper divisors (13283931194019).

22201200112221 is a wasteful number, since it uses less digits than its factorization.

22201200112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28443 (or 28437 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22201200112221 its reverse (12221100210222), we get a palindrome (34422300322443).

The spelling of 22201200112221 in words is "twenty-two trillion, two hundred one billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".