21433044233 has 8 divisors (see below), whose sum is σ = 21894478848. Its totient is φ = 20973722224.

The previous prime is 21433044223. The next prime is 21433044301. The reversal of 21433044233 is 33244033412.

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

It is not a de Polignac number, because 21433044233 - 2¹⁰ = 21433043209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21433044196 and 21433044205.

It is not an unprimeable number, because it can be changed into a prime (21433044223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507635 + ... + 548232.

It is an arithmetic number, because the mean of its divisors is an integer number (2736809856).

Almost surely, 2^21433044233 is an apocalyptic number.

It is an amenable number.

21433044233 is a deficient number, since it is larger than the sum of its proper divisors (461434615).

21433044233 is a wasteful number, since it uses less digits than its factorization.

21433044233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056303.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 21433044233 its reverse (33244033412), we get a palindrome (54677077645).

The spelling of 21433044233 in words is "twenty-one billion, four hundred thirty-three million, forty-four thousand, two hundred thirty-three".