212222245 has 8 divisors (see below), whose sum is σ = 255260160. Its totient is φ = 169382160.

The previous prime is 212222189. The next prime is 212222291. The reversal of 212222245 is 542222212.

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

It is not a de Polignac number, because 212222245 - 2⁹ = 212221733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47085 + ... + 51394.

It is an arithmetic number, because the mean of its divisors is an integer number (31907520).

Almost surely, 2^212222245 is an apocalyptic number.

It is an amenable number.

212222245 is a deficient number, since it is larger than the sum of its proper divisors (43037915).

212222245 is an equidigital number, since it uses as much as digits as its factorization.

212222245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98915.

The product of its digits is 1280, while the sum is 22.

The square root of 212222245 is about 14567.8497040572. The cubic root of 212222245 is about 596.4814857991.

Adding to 212222245 its reverse (542222212), we get a palindrome (754444457).

The spelling of 212222245 in words is "two hundred twelve million, two hundred twenty-two thousand, two hundred forty-five".