22120011121 has 4 divisors (see below), whose sum is σ = 23821550452. Its totient is φ = 20418471792.

The previous prime is 22120011119. The next prime is 22120011131. The reversal of 22120011121 is 12111002122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5178385521 + 16941625600 = 71961^2 + 130160^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120011121 - 2¹ = 22120011119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1701539317 = 22120011121 / (2 + 2 + 1 + 2 + 0 + 0 + 1 + 1 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120011101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850769646 + ... + 850769671.

It is an arithmetic number, because the mean of its divisors is an integer number (5955387613).

Almost surely, 2^22120011121 is an apocalyptic number.

It is an amenable number.

22120011121 is a deficient number, since it is larger than the sum of its proper divisors (1701539331).

22120011121 is a wasteful number, since it uses less digits than its factorization.

22120011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701539330.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22120011121 its reverse (12111002122), we get a palindrome (34231013243).

It can be divided in two parts, 2212001 and 1121, that added together give a palindrome (2213122).

The spelling of 22120011121 in words is "twenty-two billion, one hundred twenty million, eleven thousand, one hundred twenty-one".