22054043221 has 8 divisors (see below), whose sum is σ = 26073745920. Its totient is φ = 18251621808.

The previous prime is 22054043197. The next prime is 22054043269. The reversal of 22054043221 is 12234045022.

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

It is not a de Polignac number, because 22054043221 - 2¹⁷ = 22053912149 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 (22054043521) 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, 54320101 + ... + 54320506.

It is an arithmetic number, because the mean of its divisors is an integer number (3259218240).

Almost surely, 2^22054043221 is an apocalyptic number.

It is an amenable number.

22054043221 is a deficient number, since it is larger than the sum of its proper divisors (4019702699).

22054043221 is a wasteful number, since it uses less digits than its factorization.

22054043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108640643.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 22054043221 its reverse (12234045022), we get a palindrome (34288088243).

The spelling of 22054043221 in words is "twenty-two billion, fifty-four million, forty-three thousand, two hundred twenty-one".