222212207205 has 24 divisors (see below), whose sum is σ = 385206864120. Its totient is φ = 118501165440.

The previous prime is 222212207201. The next prime is 222212207233. The reversal of 222212207205 is 502702212222.

It is a happy number.

222212207205 is a `hidden beast` number, since 222 + 212 + 20 + 7 + 205 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 44223566436 + 177988640769 = 210294^2 + 421887^2 .

It is not a de Polignac number, because 222212207205 - 2² = 222212207201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222212207201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207895 + ... + 698315.

It is an arithmetic number, because the mean of its divisors is an integer number (16050286005).

Almost surely, 2^222212207205 is an apocalyptic number.

It is an amenable number.

222212207205 is a deficient number, since it is larger than the sum of its proper divisors (162994656915).

222212207205 is a wasteful number, since it uses less digits than its factorization.

222212207205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500501 (or 500498 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

Adding to 222212207205 its reverse (502702212222), we get a palindrome (724914419427).

The spelling of 222212207205 in words is "two hundred twenty-two billion, two hundred twelve million, two hundred seven thousand, two hundred five".