222233212221 has 16 divisors (see below), whose sum is σ = 304581198144. Its totient is φ = 144027241344.

The previous prime is 222233212153. The next prime is 222233212241. The reversal of 222233212221 is 122212332222.

It is not a de Polignac number, because 222233212221 - 2¹⁴ = 222233195837 is a prime.

It is a super-2 number, since 2×222233212221² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222233212191 and 222233212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222233212241) 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, 731656 + ... + 989841.

It is an arithmetic number, because the mean of its divisors is an integer number (19036324884).

Almost surely, 2^222233212221 is an apocalyptic number.

It is an amenable number.

222233212221 is a deficient number, since it is larger than the sum of its proper divisors (82347985923).

222233212221 is a wasteful number, since it uses less digits than its factorization.

222233212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722700.

The product of its digits is 2304, while the sum is 24.

Adding to 222233212221 its reverse (122212332222), we get a palindrome (344445544443).

The spelling of 222233212221 in words is "two hundred twenty-two billion, two hundred thirty-three million, two hundred twelve thousand, two hundred twenty-one".