21050024234 has 8 divisors (see below), whose sum is σ = 31784143008. Its totient is φ = 10455309900.

The previous prime is 21050024231. The next prime is 21050024251. The reversal of 21050024234 is 43242005012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21050024231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34850732 + ... + 34851335.

It is an arithmetic number, because the mean of its divisors is an integer number (3973017876).

Almost surely, 2^21050024234 is an apocalyptic number.

21050024234 is a deficient number, since it is larger than the sum of its proper divisors (10734118774).

21050024234 is a wasteful number, since it uses less digits than its factorization.

21050024234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69702220.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 21050024234 its reverse (43242005012), we get a palindrome (64292029246).

The spelling of 21050024234 in words is "twenty-one billion, fifty million, twenty-four thousand, two hundred thirty-four".