21014041144 has 16 divisors (see below), whose sum is σ = 39406118400. Its totient is φ = 10505742912.

The previous prime is 21014041141. The next prime is 21014041171. The reversal of 21014041144 is 44114041012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014041141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87909 + ... + 223060.

It is an arithmetic number, because the mean of its divisors is an integer number (2462882400).

Almost surely, 2^21014041144 is an apocalyptic number.

It is an amenable number.

21014041144 is a deficient number, since it is larger than the sum of its proper divisors (18392077256).

21014041144 is a wasteful number, since it uses less digits than its factorization.

21014041144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319422 (or 319418 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21014041144 its reverse (44114041012), we get a palindrome (65128082156).

The spelling of 21014041144 in words is "twenty-one billion, fourteen million, forty-one thousand, one hundred forty-four".