21134242024 has 64 divisors (see below), whose sum is σ = 48031568640. Its totient is φ = 8521666560.

The previous prime is 21134242007. The next prime is 21134242027. The reversal of 21134242024 is 42024243112.

It is a self number, because there is not a number n which added to its sum of digits gives 21134242024.

It is not an unprimeable number, because it can be changed into a prime (21134242027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55929 + ... + 213064.

It is an arithmetic number, because the mean of its divisors is an integer number (750493260).

Almost surely, 2^21134242024 is an apocalyptic number.

It is an amenable number.

21134242024 is an abundant number, since it is smaller than the sum of its proper divisors (26897326616).

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

21134242024 is a wasteful number, since it uses less digits than its factorization.

21134242024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269090 (or 269086 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21134242024 its reverse (42024243112), we get a palindrome (63158485136).

The spelling of 21134242024 in words is "twenty-one billion, one hundred thirty-four million, two hundred forty-two thousand, twenty-four".