2212224432421 has 2 divisors, whose sum is σ = 2212224432422. Its totient is φ = 2212224432420.

The previous prime is 2212224432403. The next prime is 2212224432461. The reversal of 2212224432421 is 1242344222122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2162590830625 + 49633601796 = 1470575^2 + 222786^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212224432421 - 2⁷ = 2212224432293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212224432461) 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 as a sum of consecutive naturals, namely, 1106112216210 + 1106112216211.

It is an arithmetic number, because the mean of its divisors is an integer number (1106112216211).

Almost surely, 2^{2212224432421} is an apocalyptic number.

It is an amenable number.

2212224432421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212224432421 is an equidigital number, since it uses as much as digits as its factorization.

2212224432421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24576, while the sum is 31.

Adding to 2212224432421 its reverse (1242344222122), we get a palindrome (3454568654543).

The spelling of 2212224432421 in words is "two trillion, two hundred twelve billion, two hundred twenty-four million, four hundred thirty-two thousand, four hundred twenty-one".