222221112202221 has 8 divisors (see below), whose sum is σ = 323230708657824. Its totient is φ = 134679461940720.

The previous prime is 222221112202213. The next prime is 222221112202247. The reversal of 222221112202221 is 122202211122222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222221112202221 - 2³ = 222221112202213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222221112202191 and 222221112202200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221112002221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3366986548486 + ... + 3366986548551.

It is an arithmetic number, because the mean of its divisors is an integer number (40403838582228).

Almost surely, 2^{222221112202221} is an apocalyptic number.

It is an amenable number.

222221112202221 is a deficient number, since it is larger than the sum of its proper divisors (101009596455603).

222221112202221 is a wasteful number, since it uses less digits than its factorization.

222221112202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733973097051.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 222221112202221 its reverse (122202211122222), we get a palindrome (344423323324443).

The spelling of 222221112202221 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred twelve million, two hundred two thousand, two hundred twenty-one".