21133022333 has 4 divisors (see below), whose sum is σ = 21133402368. Its totient is φ = 21132642300.

The previous prime is 21133022279. The next prime is 21133022353. The reversal of 21133022333 is 33322033112.

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 21133022333 - 2¹⁰ = 21133021309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21133022299 and 21133022308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133022353) 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, 88541 + ... + 223842.

It is an arithmetic number, because the mean of its divisors is an integer number (5283350592).

Almost surely, 2^21133022333 is an apocalyptic number.

It is an amenable number.

21133022333 is a deficient number, since it is larger than the sum of its proper divisors (380035).

21133022333 is an equidigital number, since it uses as much as digits as its factorization.

21133022333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380034.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21133022333 its reverse (33322033112), we get a palindrome (54455055445).

The spelling of 21133022333 in words is "twenty-one billion, one hundred thirty-three million, twenty-two thousand, three hundred thirty-three".