212224314131221 has 8 divisors (see below), whose sum is σ = 242544820142144. Its totient is φ = 181904494832640.

The previous prime is 212224314131209. The next prime is 212224314131233. The reversal of 212224314131221 is 122131413422212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212224314131209) and next prime (212224314131233).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212224314131221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212224314132221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171015675 + ... + 172252168.

It is an arithmetic number, because the mean of its divisors is an integer number (30318102517768).

Almost surely, 2^{212224314131221} is an apocalyptic number.

It is an amenable number.

212224314131221 is a deficient number, since it is larger than the sum of its proper divisors (30320506010923).

212224314131221 is an equidigital number, since it uses as much as digits as its factorization.

212224314131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343356171.

The product of its digits is 9216, while the sum is 31.

Adding to 212224314131221 its reverse (122131413422212), we get a palindrome (334355727553433).

The spelling of 212224314131221 in words is "two hundred twelve trillion, two hundred twenty-four billion, three hundred fourteen million, one hundred thirty-one thousand, two hundred twenty-one".