22120221200121 has 12 divisors (see below), whose sum is σ = 34856106133680. Its totient is φ = 13406194666680.

The previous prime is 22120221200101. The next prime is 22120221200123. The reversal of 22120221200121 is 12100212202122.

It is a happy number.

22120221200121 is a `hidden beast` number, since 2 + 2 + 120 + 221 + 200 + 121 = 666.

It is not a de Polignac number, because 22120221200121 - 2⁵ = 22120221200089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22120221200094 and 22120221200103.

It is not an unprimeable number, because it can be changed into a prime (22120221200123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111718288791 + ... + 111718288988.

It is an arithmetic number, because the mean of its divisors is an integer number (2904675511140).

Almost surely, 2^{22120221200121} is an apocalyptic number.

It is an amenable number.

22120221200121 is a deficient number, since it is larger than the sum of its proper divisors (12735884933559).

22120221200121 is a wasteful number, since it uses less digits than its factorization.

22120221200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223436577796 (or 223436577793 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22120221200121 its reverse (12100212202122), we get a palindrome (34220433402243).

It can be divided in two parts, 2212022 and 1200121, that added together give a palindrome (3412143).

The spelling of 22120221200121 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty-one million, two hundred thousand, one hundred twenty-one".