21341233369 has 2 divisors, whose sum is σ = 21341233370. Its totient is φ = 21341233368.

The previous prime is 21341233343. The next prime is 21341233387. The reversal of 21341233369 is 96333214312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19881000000 + 1460233369 = 141000^2 + 38213^2 .

It is a cyclic number.

It is not a de Polignac number, because 21341233369 - 2¹³ = 21341225177 is a prime.

It is a super-2 number, since 2×21341233369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21345233369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10670616684 + 10670616685.

It is an arithmetic number, because the mean of its divisors is an integer number (10670616685).

Almost surely, 2^21341233369 is an apocalyptic number.

It is an amenable number.

21341233369 is a deficient number, since it is larger than the sum of its proper divisors (1).

21341233369 is an equidigital number, since it uses as much as digits as its factorization.

21341233369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 37.

The spelling of 21341233369 in words is "twenty-one billion, three hundred forty-one million, two hundred thirty-three thousand, three hundred sixty-nine".