22134001221 has 32 divisors (see below), whose sum is σ = 33139088640. Its totient is φ = 14599872000.

The previous prime is 22134001111. The next prime is 22134001231. The reversal of 22134001221 is 12210043122.

It is a happy number.

It is not a de Polignac number, because 22134001221 - 2⁹ = 22134000709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22134001194 and 22134001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22134001231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1827616 + ... + 1839686.

It is an arithmetic number, because the mean of its divisors is an integer number (1035596520).

Almost surely, 2^22134001221 is an apocalyptic number.

It is an amenable number.

22134001221 is a deficient number, since it is larger than the sum of its proper divisors (11005087419).

22134001221 is a wasteful number, since it uses less digits than its factorization.

22134001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12794 (or 12788 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22134001221 its reverse (12210043122), we get a palindrome (34344044343).

The spelling of 22134001221 in words is "twenty-two billion, one hundred thirty-four million, one thousand, two hundred twenty-one".