21233124444433 has 16 divisors (see below), whose sum is σ = 24732618172416. Its totient is φ = 18034200732240.

The previous prime is 21233124444377. The next prime is 21233124444461. The reversal of 21233124444433 is 33444442133212.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-21233124444433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21233224444433) 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, 975865785 + ... + 975887542.

It is an arithmetic number, because the mean of its divisors is an integer number (1545788635776).

Almost surely, 2^{21233124444433} is an apocalyptic number.

21233124444433 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21233124444433 is a deficient number, since it is larger than the sum of its proper divisors (3499493727983).

21233124444433 is a wasteful number, since it uses less digits than its factorization.

21233124444433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951753404.

The product of its digits is 663552, while the sum is 40.

Adding to 21233124444433 its reverse (33444442133212), we get a palindrome (54677566577645).

The spelling of 21233124444433 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred twenty-four million, four hundred forty-four thousand, four hundred thirty-three".