22200221221 has 8 divisors (see below), whose sum is σ = 22413827520. Its totient is φ = 21986728608.

The previous prime is 22200221213. The next prime is 22200221269. The reversal of 22200221221 is 12212200222.

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

It is a cyclic number.

It is not a de Polignac number, because 22200221221 - 2³ = 22200221213 is a prime.

It is a super-2 number, since 2×22200221221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22200221195 and 22200221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200221291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394000 + ... + 446806.

It is an arithmetic number, because the mean of its divisors is an integer number (2801728440).

Almost surely, 2^22200221221 is an apocalyptic number.

It is an amenable number.

22200221221 is a deficient number, since it is larger than the sum of its proper divisors (213606299).

22200221221 is a wasteful number, since it uses less digits than its factorization.

22200221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56843.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22200221221 its reverse (12212200222), we get a palindrome (34412421443).

The spelling of 22200221221 in words is "twenty-two billion, two hundred million, two hundred twenty-one thousand, two hundred twenty-one".