222201222221 has 16 divisors (see below), whose sum is σ = 247402659840. Its totient is φ = 197873610480.

The previous prime is 222201222181. The next prime is 222201222233. The reversal of 222201222221 is 122222102222.

It is a cyclic number.

It is not a de Polignac number, because 222201222221 - 2³⁰ = 221127480397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222201222193 and 222201222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201222521) 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, 896321 + ... + 1117046.

It is an arithmetic number, because the mean of its divisors is an integer number (15462666240).

Almost surely, 2^222201222221 is an apocalyptic number.

It is an amenable number.

222201222221 is a deficient number, since it is larger than the sum of its proper divisors (25201437619).

222201222221 is a wasteful number, since it uses less digits than its factorization.

222201222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013584.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 222201222221 its reverse (122222102222), we get a palindrome (344423324443).

The spelling of 222201222221 in words is "two hundred twenty-two billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty-one".