21412222361 has 2 divisors, whose sum is σ = 21412222362. Its totient is φ = 21412222360.

The previous prime is 21412222339. The next prime is 21412222367. The reversal of 21412222361 is 16322221412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16178568025 + 5233654336 = 127195^2 + 72344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21412222361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21412222361.

It is not a weakly prime, because it can be changed into another prime (21412222367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10706111180 + 10706111181.

It is an arithmetic number, because the mean of its divisors is an integer number (10706111181).

Almost surely, 2^21412222361 is an apocalyptic number.

It is an amenable number.

21412222361 is a deficient number, since it is larger than the sum of its proper divisors (1).

21412222361 is an equidigital number, since it uses as much as digits as its factorization.

21412222361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

Adding to 21412222361 its reverse (16322221412), we get a palindrome (37734443773).

The spelling of 21412222361 in words is "twenty-one billion, four hundred twelve million, two hundred twenty-two thousand, three hundred sixty-one".