21124244134 has 16 divisors (see below), whose sum is σ = 36221039136. Its totient is φ = 9051235200.

The previous prime is 21124244117. The next prime is 21124244179. The reversal of 21124244134 is 43144242112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 101557 + ... + 229264.

It is an arithmetic number, because the mean of its divisors is an integer number (2263814946).

Almost surely, 2^21124244134 is an apocalyptic number.

21124244134 is a deficient number, since it is larger than the sum of its proper divisors (15096795002).

21124244134 is a wasteful number, since it uses less digits than its factorization.

21124244134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335391.

The product of its digits is 6144, while the sum is 28.

Adding to 21124244134 its reverse (43144242112), we get a palindrome (64268486246).

The spelling of 21124244134 in words is "twenty-one billion, one hundred twenty-four million, two hundred forty-four thousand, one hundred thirty-four".