21322212341 has 2 divisors, whose sum is σ = 21322212342. Its totient is φ = 21322212340.

The previous prime is 21322212299. The next prime is 21322212347. The reversal of 21322212341 is 14321222312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13625659441 + 7696552900 = 116729^2 + 87730^2 .

It is a cyclic number.

It is not a de Polignac number, because 21322212341 - 2¹⁸ = 21321950197 is a prime.

It is a super-2 number, since 2×21322212341² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21322212347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661106170 + 10661106171.

It is an arithmetic number, because the mean of its divisors is an integer number (10661106171).

Almost surely, 2^21322212341 is an apocalyptic number.

It is an amenable number.

21322212341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322212341 is an equidigital number, since it uses as much as digits as its factorization.

21322212341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

Adding to 21322212341 its reverse (14321222312), we get a palindrome (35643434653).

The spelling of 21322212341 in words is "twenty-one billion, three hundred twenty-two million, two hundred twelve thousand, three hundred forty-one".