22121221001101 has 8 divisors (see below), whose sum is σ = 22130737463160. Its totient is φ = 22111705339392.

The previous prime is 22121221001003. The next prime is 22121221001123. The reversal of 22121221001101 is 10110012212122.

It can be written as a sum of positive squares in 4 ways, for example, as 660438601 + 22120560562500 = 25699^2 + 4703250^2 .

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 22121221001101 - 2²⁷ = 22121086783373 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 (22121221061101) 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, 58809841 + ... + 59184793.

It is an arithmetic number, because the mean of its divisors is an integer number (2766342182895).

Almost surely, 2^{22121221001101} is an apocalyptic number.

It is an amenable number.

22121221001101 is a deficient number, since it is larger than the sum of its proper divisors (9516462059).

22121221001101 is a wasteful number, since it uses less digits than its factorization.

22121221001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400175.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22121221001101 its reverse (10110012212122), we get a palindrome (32231233213223).

The spelling of 22121221001101 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty-one million, one thousand, one hundred one".