21433424124 has 48 divisors (see below), whose sum is σ = 57176607488. Its totient is φ = 6121605888.

The previous prime is 21433424083. The next prime is 21433424153. The reversal of 21433424124 is 42142433412.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21433424091 and 21433424100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192939 + ... + 283005.

Almost surely, 2^21433424124 is an apocalyptic number.

It is an amenable number.

21433424124 is an abundant number, since it is smaller than the sum of its proper divisors (35743183364).

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

21433424124 is a wasteful number, since it uses less digits than its factorization.

21433424124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92914 (or 92912 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

Adding to 21433424124 its reverse (42142433412), we get a palindrome (63575857536).

The spelling of 21433424124 in words is "twenty-one billion, four hundred thirty-three million, four hundred twenty-four thousand, one hundred twenty-four".