22261416221 has 4 divisors (see below), whose sum is σ = 24285181344. Its totient is φ = 20237651100.

The previous prime is 22261416167. The next prime is 22261416277. The reversal of 22261416221 is 12261416222.

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 22261416221 - 2²⁶ = 22194307357 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 (22261416521) 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, 1011882545 + ... + 1011882566.

It is an arithmetic number, because the mean of its divisors is an integer number (6071295336).

Almost surely, 2^22261416221 is an apocalyptic number.

It is an amenable number.

22261416221 is a deficient number, since it is larger than the sum of its proper divisors (2023765123).

22261416221 is a wasteful number, since it uses less digits than its factorization.

22261416221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023765122.

The product of its digits is 4608, while the sum is 29.

Subtracting from 22261416221 its reverse (12261416222), we obtain a palindrome (9999999999).

The spelling of 22261416221 in words is "twenty-two billion, two hundred sixty-one million, four hundred sixteen thousand, two hundred twenty-one".