21441130349 has 2 divisors, whose sum is σ = 21441130350. Its totient is φ = 21441130348.

The previous prime is 21441130339. The next prime is 21441130363. The reversal of 21441130349 is 94303114412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15484069225 + 5957061124 = 124435^2 + 77182^2 .

It is a cyclic number.

It is not a de Polignac number, because 21441130349 - 2³² = 17146163053 is a prime.

It is a super-4 number, since 4×21441130349⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21441130339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10720565174 + 10720565175.

It is an arithmetic number, because the mean of its divisors is an integer number (10720565175).

Almost surely, 2^21441130349 is an apocalyptic number.

It is an amenable number.

21441130349 is a deficient number, since it is larger than the sum of its proper divisors (1).

21441130349 is an equidigital number, since it uses as much as digits as its factorization.

21441130349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 21441130349 in words is "twenty-one billion, four hundred forty-one million, one hundred thirty thousand, three hundred forty-nine".