22201223221 has 8 divisors (see below), whose sum is σ = 23305824000. Its totient is φ = 21120899520.

The previous prime is 22201223173. The next prime is 22201223299. The reversal of 22201223221 is 12232210222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22201223221 is a prime.

It is a super-2 number, since 2×22201223221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201223021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6067396 + ... + 6071053.

It is an arithmetic number, because the mean of its divisors is an integer number (2913228000).

Almost surely, 2^22201223221 is an apocalyptic number.

It is an amenable number.

22201223221 is a deficient number, since it is larger than the sum of its proper divisors (1104600779).

22201223221 is a wasteful number, since it uses less digits than its factorization.

22201223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12138539.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22201223221 its reverse (12232210222), we get a palindrome (34433433443).

The spelling of 22201223221 in words is "twenty-two billion, two hundred one million, two hundred twenty-three thousand, two hundred twenty-one".