21013141144 has 16 divisors (see below), whose sum is σ = 39405946320. Its totient is φ = 10504888800.

The previous prime is 21013141141. The next prime is 21013141169. The reversal of 21013141144 is 44114131012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013141141) 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 3 ways as a sum of consecutive naturals, for example, 156307 + ... + 257794.

It is an arithmetic number, because the mean of its divisors is an integer number (2462871645).

Almost surely, 2^21013141144 is an apocalyptic number.

It is an amenable number.

21013141144 is a deficient number, since it is larger than the sum of its proper divisors (18392805176).

21013141144 is a wasteful number, since it uses less digits than its factorization.

21013141144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420450 (or 420446 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21013141144 its reverse (44114131012), we get a palindrome (65127272156).

The spelling of 21013141144 in words is "twenty-one billion, thirteen million, one hundred forty-one thousand, one hundred forty-four".