21014034024 has 64 divisors (see below), whose sum is σ = 53604944640. Its totient is φ = 6862419200.

The previous prime is 21014034023. The next prime is 21014034037. The reversal of 21014034024 is 42043041012.

It is not an unprimeable number, because it can be changed into a prime (21014034023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 879889 + ... + 903455.

It is an arithmetic number, because the mean of its divisors is an integer number (837577260).

Almost surely, 2^21014034024 is an apocalyptic number.

21014034024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21014034024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26802472320).

21014034024 is an abundant number, since it is smaller than the sum of its proper divisors (32590910616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21014034024 is a wasteful number, since it uses less digits than its factorization.

21014034024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24330 (or 24326 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21014034024 its reverse (42043041012), we get a palindrome (63057075036).

The spelling of 21014034024 in words is "twenty-one billion, fourteen million, thirty-four thousand, twenty-four".