22112112221021 has 8 divisors (see below), whose sum is σ = 22177154799360. Its totient is φ = 22047077223328.

The previous prime is 22112112221009. The next prime is 22112112221131. The reversal of 22112112221021 is 12012221121122.

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 22112112221021 - 2¹⁰ = 22112112219997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112112220984 and 22112112221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112117221021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3973940 + ... + 7747026.

It is an arithmetic number, because the mean of its divisors is an integer number (2772144349920).

Almost surely, 2^{22112112221021} is an apocalyptic number.

It is an amenable number.

22112112221021 is a deficient number, since it is larger than the sum of its proper divisors (65042578339).

22112112221021 is a wasteful number, since it uses less digits than its factorization.

22112112221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790323.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22112112221021 its reverse (12012221121122), we get a palindrome (34124333342143).

The spelling of 22112112221021 in words is "twenty-two trillion, one hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, twenty-one".