222312213221 has 8 divisors (see below), whose sum is σ = 269016459840. Its totient is φ = 179344306368.

The previous prime is 222312213217. The next prime is 222312213229. The reversal of 222312213221 is 122312213222.

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 222312213221 - 2² = 222312213217 is a prime.

It is a super-3 number, since 3×222312213221³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222312213229) 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, 934084811 + ... + 934085048.

It is an arithmetic number, because the mean of its divisors is an integer number (33627057480).

Almost surely, 2^222312213221 is an apocalyptic number.

It is an amenable number.

222312213221 is a deficient number, since it is larger than the sum of its proper divisors (46704246619).

222312213221 is a wasteful number, since it uses less digits than its factorization.

222312213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868169883.

The product of its digits is 1152, while the sum is 23.

Adding to 222312213221 its reverse (122312213222), we get a palindrome (344624426443).

Subtracting from 222312213221 its reverse (122312213222), we obtain a palindrome (99999999999).

The spelling of 222312213221 in words is "two hundred twenty-two billion, three hundred twelve million, two hundred thirteen thousand, two hundred twenty-one".