21234433124244 has 48 divisors (see below), whose sum is σ = 50622547239936. Its totient is φ = 6924623340000.

The previous prime is 21234433124237. The next prime is 21234433124249. The reversal of 21234433124244 is 44242133443212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234433124249) 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, 6602382 + ... + 9276869.

It is an arithmetic number, because the mean of its divisors is an integer number (1054636400832).

Almost surely, 2^{21234433124244} is an apocalyptic number.

It is an amenable number.

21234433124244 is an abundant number, since it is smaller than the sum of its proper divisors (29388114115692).

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

21234433124244 is a wasteful number, since it uses less digits than its factorization.

21234433124244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15881676 (or 15881674 counting only the distinct ones).

The product of its digits is 442368, while the sum is 39.

Adding to 21234433124244 its reverse (44242133443212), we get a palindrome (65476566567456).

The spelling of 21234433124244 in words is "twenty-one trillion, two hundred thirty-four billion, four hundred thirty-three million, one hundred twenty-four thousand, two hundred forty-four".