21343010241 has 16 divisors (see below), whose sum is σ = 33936712704. Its totient is φ = 11665744464.

The previous prime is 21343010239. The next prime is 21343010243. The reversal of 21343010241 is 14201034312.

It is an interprime number because it is at equal distance from previous prime (21343010239) and next prime (21343010243).

It is not a de Polignac number, because 21343010241 - 2¹ = 21343010239 is a prime.

It is a super-2 number, since 2×21343010241² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21343010243) 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 in 15 ways as a sum of consecutive naturals, for example, 22093731 + ... + 22094696.

It is an arithmetic number, because the mean of its divisors is an integer number (2121044544).

Almost surely, 2^21343010241 is an apocalyptic number.

21343010241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21343010241 is a deficient number, since it is larger than the sum of its proper divisors (12593702463).

21343010241 is a wasteful number, since it uses less digits than its factorization.

21343010241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44188460.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21343010241 its reverse (14201034312), we get a palindrome (35544044553).

The spelling of 21343010241 in words is "twenty-one billion, three hundred forty-three million, ten thousand, two hundred forty-one".