21233431345224 has 48 divisors (see below), whose sum is σ = 61750285038000. Its totient is φ = 6066694669728.

The previous prime is 21233431345207. The next prime is 21233431345261. The reversal of 21233431345224 is 42254313433212.

It is a super-2 number, since 2×21233431345224² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9027818274 + ... + 9027820625.

It is an arithmetic number, because the mean of its divisors is an integer number (1286464271625).

Almost surely, 2^{21233431345224} is an apocalyptic number.

21233431345224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21233431345224 is an abundant number, since it is smaller than the sum of its proper divisors (40516853692776).

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

21233431345224 is a wasteful number, since it uses less digits than its factorization.

21233431345224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18055638922 (or 18055638911 counting only the distinct ones).

The product of its digits is 414720, while the sum is 39.

Adding to 21233431345224 its reverse (42254313433212), we get a palindrome (63487744778436).

The spelling of 21233431345224 in words is "twenty-one trillion, two hundred thirty-three billion, four hundred thirty-one million, three hundred forty-five thousand, two hundred twenty-four".