22120221221201 has 4 divisors (see below), whose sum is σ = 22659738812004. Its totient is φ = 21580703630400.

The previous prime is 22120221221179. The next prime is 22120221221239. The reversal of 22120221221201 is 10212212202122.

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 490987497025 + 21629233724176 = 700705^2 + 4650724^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120221221201 - 2³⁸ = 21845343314257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22120221221291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269758795340 + ... + 269758795421.

It is an arithmetic number, because the mean of its divisors is an integer number (5664934703001).

Almost surely, 2^{22120221221201} is an apocalyptic number.

It is an amenable number.

22120221221201 is a deficient number, since it is larger than the sum of its proper divisors (539517590803).

22120221221201 is an equidigital number, since it uses as much as digits as its factorization.

22120221221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539517590802.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22120221221201 its reverse (10212212202122), we get a palindrome (32332433423323).

The spelling of 22120221221201 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred one".