22033020231221 has 8 divisors (see below), whose sum is σ = 22053043592664. Its totient is φ = 22012999476480.

The previous prime is 22033020231181. The next prime is 22033020231241. The reversal of 22033020231221 is 12213202033022.

It can be written as a sum of positive squares in 4 ways, for example, as 110632072996 + 21922388158225 = 332614^2 + 4682135^2 .

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 22033020231221 - 2³⁸ = 21758142324277 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 (22033020231241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16464905 + ... + 17752721.

It is an arithmetic number, because the mean of its divisors is an integer number (2756630449083).

Almost surely, 2^{22033020231221} is an apocalyptic number.

It is an amenable number.

22033020231221 is a deficient number, since it is larger than the sum of its proper divisors (20023361443).

22033020231221 is a wasteful number, since it uses less digits than its factorization.

22033020231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303351.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 22033020231221 its reverse (12213202033022), we get a palindrome (34246222264243).

The spelling of 22033020231221 in words is "twenty-two trillion, thirty-three billion, twenty million, two hundred thirty-one thousand, two hundred twenty-one".