21144013010 has 16 divisors (see below), whose sum is σ = 40062340800. Its totient is φ = 8012468016.

The previous prime is 21144012997. The next prime is 21144013057. The reversal of 21144013010 is 1031044112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21144013010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55641950 + ... + 55642329.

It is an arithmetic number, because the mean of its divisors is an integer number (2503896300).

Almost surely, 2^21144013010 is an apocalyptic number.

21144013010 is a deficient number, since it is larger than the sum of its proper divisors (18918327790).

21144013010 is a wasteful number, since it uses less digits than its factorization.

21144013010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111284305.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21144013010 its reverse (1031044112), we get a palindrome (22175057122).

The spelling of 21144013010 in words is "twenty-one billion, one hundred forty-four million, thirteen thousand, ten".