222333121221 has 8 divisors (see below), whose sum is σ = 297379317984. Its totient is φ = 147754502640.

The previous prime is 222333121183. The next prime is 222333121223. The reversal of 222333121221 is 122121333222.

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

It is not a de Polignac number, because 222333121221 - 2²² = 222328926917 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222333121191 and 222333121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222333121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116893435 + ... + 116895336.

It is an arithmetic number, because the mean of its divisors is an integer number (37172414748).

Almost surely, 2^222333121221 is an apocalyptic number.

It is an amenable number.

222333121221 is a deficient number, since it is larger than the sum of its proper divisors (75046196763).

222333121221 is a wasteful number, since it uses less digits than its factorization.

222333121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233789091.

The product of its digits is 1728, while the sum is 24.

Adding to 222333121221 its reverse (122121333222), we get a palindrome (344454454443).

The spelling of 222333121221 in words is "two hundred twenty-two billion, three hundred thirty-three million, one hundred twenty-one thousand, two hundred twenty-one".