21422236733 has 4 divisors (see below), whose sum is σ = 21437250240. Its totient is φ = 21407223228.

The previous prime is 21422236711. The next prime is 21422236747. The reversal of 21422236733 is 33763222412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21422236733 - 2¹⁴ = 21422220349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21422236693 and 21422236702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422206733) 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, 7504613 + ... + 7507466.

It is an arithmetic number, because the mean of its divisors is an integer number (5359312560).

Almost surely, 2^21422236733 is an apocalyptic number.

It is an amenable number.

21422236733 is a deficient number, since it is larger than the sum of its proper divisors (15013507).

21422236733 is a wasteful number, since it uses less digits than its factorization.

21422236733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15013506.

The product of its digits is 72576, while the sum is 35.

The spelling of 21422236733 in words is "twenty-one billion, four hundred twenty-two million, two hundred thirty-six thousand, seven hundred thirty-three".