22133455521 has 8 divisors (see below), whose sum is σ = 29514425280. Its totient is φ = 14754061392.

The previous prime is 22133455501. The next prime is 22133455567. The reversal of 22133455521 is 12555433122.

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

It is not a de Polignac number, because 22133455521 - 2²¹ = 22131358369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22133455501) 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, 360730 + ... + 417603.

It is an arithmetic number, because the mean of its divisors is an integer number (3689303160).

Almost surely, 2^22133455521 is an apocalyptic number.

It is an amenable number.

22133455521 is a deficient number, since it is larger than the sum of its proper divisors (7380969759).

22133455521 is an equidigital number, since it uses as much as digits as its factorization.

22133455521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787815.

The product of its digits is 36000, while the sum is 33.

Adding to 22133455521 its reverse (12555433122), we get a palindrome (34688888643).

The spelling of 22133455521 in words is "twenty-two billion, one hundred thirty-three million, four hundred fifty-five thousand, five hundred twenty-one".