22235666653221 has 8 divisors (see below), whose sum is σ = 33882920614464. Its totient is φ = 12706095230400.

The previous prime is 22235666653169. The next prime is 22235666653247. The reversal of 22235666653221 is 12235666653222.

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

It is not a de Polignac number, because 22235666653221 - 2¹⁰ = 22235666652197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22235666653261) 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, 529420634580 + ... + 529420634621.

It is an arithmetic number, because the mean of its divisors is an integer number (4235365076808).

Almost surely, 2^{22235666653221} is an apocalyptic number.

22235666653221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22235666653221 is a deficient number, since it is larger than the sum of its proper divisors (11647253961243).

22235666653221 is a wasteful number, since it uses less digits than its factorization.

22235666653221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058841269211.

The product of its digits is 9331200, while the sum is 51.

Subtracting from 22235666653221 its reverse (12235666653222), we obtain a palindrome (9999999999999).

The spelling of 22235666653221 in words is "twenty-two trillion, two hundred thirty-five billion, six hundred sixty-six million, six hundred fifty-three thousand, two hundred twenty-one".