22011242221 has 8 divisors (see below), whose sum is σ = 22437427680. Its totient is φ = 21585459792.

The previous prime is 22011242177. The next prime is 22011242233. The reversal of 22011242221 is 12224211022.

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 22011242221 - 2²⁹ = 21474371309 is a prime.

It is a super-2 number, since 2×22011242221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011242261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10710 + ... + 210088.

It is an arithmetic number, because the mean of its divisors is an integer number (2804678460).

Almost surely, 2^22011242221 is an apocalyptic number.

It is an amenable number.

22011242221 is a deficient number, since it is larger than the sum of its proper divisors (426185459).

22011242221 is a wasteful number, since it uses less digits than its factorization.

22011242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201515.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22011242221 its reverse (12224211022), we get a palindrome (34235453243).

The spelling of 22011242221 in words is "twenty-two billion, eleven million, two hundred forty-two thousand, two hundred twenty-one".