21243014410 has 64 divisors (see below), whose sum is σ = 41432186880. Its totient is φ = 7816253760.

The previous prime is 21243014339. The next prime is 21243014447. The reversal of 21243014410 is 1441034212.

It is a happy number.

It is a super-2 number, since 2×21243014410² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1124745 + ... + 1143475.

It is an arithmetic number, because the mean of its divisors is an integer number (647377920).

Almost surely, 2^21243014410 is an apocalyptic number.

21243014410 is a deficient number, since it is larger than the sum of its proper divisors (20189172470).

21243014410 is a wasteful number, since it uses less digits than its factorization.

21243014410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18931.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21243014410 its reverse (1441034212), we get a palindrome (22684048622).

The spelling of 21243014410 in words is "twenty-one billion, two hundred forty-three million, fourteen thousand, four hundred ten".