222000011221 has 8 divisors (see below), whose sum is σ = 226224101664. Its totient is φ = 217777232400.

The previous prime is 222000011159. The next prime is 222000011239. The reversal of 222000011221 is 122110000222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 222000011221 - 2⁹ = 222000010709 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 (222000011291) 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, 17250 + ... + 666556.

It is an arithmetic number, because the mean of its divisors is an integer number (28278012708).

Almost surely, 2^222000011221 is an apocalyptic number.

It is an amenable number.

222000011221 is a deficient number, since it is larger than the sum of its proper divisors (4224090443).

222000011221 is an equidigital number, since it uses as much as digits as its factorization.

222000011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655811.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 222000011221 its reverse (122110000222), we get a palindrome (344110011443).

The spelling of 222000011221 in words is "two hundred twenty-two billion, eleven thousand, two hundred twenty-one".