21222021133 has 8 divisors (see below), whose sum is σ = 22192765056. Its totient is φ = 20255281200.

The previous prime is 21222021103. The next prime is 21222021181. The reversal of 21222021133 is 33112022212.

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

It is not a de Polignac number, because 21222021133 - 2¹³ = 21222012941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21222021133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222021103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990153 + ... + 1011358.

It is an arithmetic number, because the mean of its divisors is an integer number (2774095632).

Almost surely, 2^21222021133 is an apocalyptic number.

21222021133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21222021133 is a deficient number, since it is larger than the sum of its proper divisors (970743923).

21222021133 is a wasteful number, since it uses less digits than its factorization.

21222021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001995.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21222021133 its reverse (33112022212), we get a palindrome (54334043345).

The spelling of 21222021133 in words is "twenty-one billion, two hundred twenty-two million, twenty-one thousand, one hundred thirty-three".