22120201321 has 12 divisors (see below), whose sum is σ = 23667022960. Its totient is φ = 20669198400.

The previous prime is 22120201303. The next prime is 22120201333. The reversal of 22120201321 is 12310202122.

It is a happy number.

It is not a de Polignac number, because 22120201321 - 2¹⁷ = 22120070249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22120201295 and 22120201304.

It is not an unprimeable number, because it can be changed into a prime (22120201351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235155 + ... + 315496.

Almost surely, 2^22120201321 is an apocalyptic number.

It is an amenable number.

22120201321 is a deficient number, since it is larger than the sum of its proper divisors (1546821639).

22120201321 is a wasteful number, since it uses less digits than its factorization.

22120201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550824 (or 550807 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22120201321 its reverse (12310202122), we get a palindrome (34430403443).

The spelling of 22120201321 in words is "twenty-two billion, one hundred twenty million, two hundred one thousand, three hundred twenty-one".