22204033123221 has 6 divisors (see below), whose sum is σ = 32072492289110. Its totient is φ = 14802688748808.

The previous prime is 22204033123219. The next prime is 22204033123243. The reversal of 22204033123221 is 12232133040222.

22204033123221 is a `hidden beast` number, since 2 + 2 + 2 + 0 + 4 + 0 + 331 + 2 + 322 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21275433000900 + 928600122321 = 4612530^2 + 963639^2 .

It is not a de Polignac number, because 22204033123221 - 2¹ = 22204033123219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22204033123021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1233557395726 + ... + 1233557395743.

Almost surely, 2^{22204033123221} is an apocalyptic number.

It is an amenable number.

22204033123221 is a deficient number, since it is larger than the sum of its proper divisors (9868459165889).

22204033123221 is a wasteful number, since it uses less digits than its factorization.

22204033123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467114791475 (or 2467114791472 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 22204033123221 its reverse (12232133040222), we get a palindrome (34436166163443).

The spelling of 22204033123221 in words is "twenty-two trillion, two hundred four billion, thirty-three million, one hundred twenty-three thousand, two hundred twenty-one".