22133402321 has 16 divisors (see below), whose sum is σ = 23249168208. Its totient is φ = 21051340800.

The previous prime is 22133402299. The next prime is 22133402327. The reversal of 22133402321 is 12320433122.

It can be written as a sum of positive squares in 8 ways, for example, as 13709833921 + 8423568400 = 117089^2 + 91780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22133402321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22133402327) 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, 243455 + ... + 321771.

It is an arithmetic number, because the mean of its divisors is an integer number (1453073013).

Almost surely, 2^22133402321 is an apocalyptic number.

It is an amenable number.

22133402321 is a deficient number, since it is larger than the sum of its proper divisors (1115765887).

22133402321 is a wasteful number, since it uses less digits than its factorization.

22133402321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78532.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 22133402321 its reverse (12320433122), we get a palindrome (34453835443).

The spelling of 22133402321 in words is "twenty-two billion, one hundred thirty-three million, four hundred two thousand, three hundred twenty-one".