22132032221 has 16 divisors (see below), whose sum is σ = 24643038000. Its totient is φ = 19743948288.

The previous prime is 22132032217. The next prime is 22132032259. The reversal of 22132032221 is 12223023122.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 537729721 + 21594302500 = 23189^2 + 146950^2 .

It is not a de Polignac number, because 22132032221 - 2² = 22132032217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22132032193 and 22132032202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22132032281) 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, 82736 + ... + 226073.

It is an arithmetic number, because the mean of its divisors is an integer number (1540189875).

Almost surely, 2^22132032221 is an apocalyptic number.

It is an amenable number.

22132032221 is a deficient number, since it is larger than the sum of its proper divisors (2511005779).

22132032221 is a wasteful number, since it uses less digits than its factorization.

22132032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309008.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22132032221 its reverse (12223023122), we get a palindrome (34355055343).

Subtracting from 22132032221 its reverse (12223023122), we obtain a palindrome (9909009099).

The spelling of 22132032221 in words is "twenty-two billion, one hundred thirty-two million, thirty-two thousand, two hundred twenty-one".