22054220221 has 4 divisors (see below), whose sum is σ = 24059149344. Its totient is φ = 20049291100.

The previous prime is 22054220213. The next prime is 22054220231. The reversal of 22054220221 is 12202245022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22054220221 - 2³ = 22054220213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22054220192 and 22054220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22054220231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002464545 + ... + 1002464566.

It is an arithmetic number, because the mean of its divisors is an integer number (6014787336).

Almost surely, 2^22054220221 is an apocalyptic number.

It is an amenable number.

22054220221 is a deficient number, since it is larger than the sum of its proper divisors (2004929123).

22054220221 is a wasteful number, since it uses less digits than its factorization.

22054220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004929122.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 22054220221 its reverse (12202245022), we get a palindrome (34256465243).

The spelling of 22054220221 in words is "twenty-two billion, fifty-four million, two hundred twenty thousand, two hundred twenty-one".