22012201121 has 4 divisors (see below), whose sum is σ = 22108324500. Its totient is φ = 21916077744.

The previous prime is 22012201117. The next prime is 22012201139. The reversal of 22012201121 is 12110221022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12110221022 = 2 ⋅6055110511.

It can be written as a sum of positive squares in 2 ways, for example, as 11944085521 + 10068115600 = 109289^2 + 100340^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012201121 - 2² = 22012201117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22012201096 and 22012201105.

It is not an unprimeable number, because it can be changed into a prime (22012201111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48061346 + ... + 48061803.

It is an arithmetic number, because the mean of its divisors is an integer number (5527081125).

Almost surely, 2^22012201121 is an apocalyptic number.

It is an amenable number.

22012201121 is a deficient number, since it is larger than the sum of its proper divisors (96123379).

22012201121 is an equidigital number, since it uses as much as digits as its factorization.

22012201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96123378.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22012201121 its reverse (12110221022), we get a palindrome (34122422143).

The spelling of 22012201121 in words is "twenty-two billion, twelve million, two hundred one thousand, one hundred twenty-one".