22120221200201 has 4 divisors (see below), whose sum is σ = 22120358940804. Its totient is φ = 22120083459600.

The previous prime is 22120221200141. The next prime is 22120221200243. The reversal of 22120221200201 is 10200212202122.

It is a happy number.

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 6553093129801 + 15567128070400 = 2559901^2 + 3945520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22120221200201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22120221200201.

It is not an unprimeable number, because it can be changed into a prime (22120221200261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68629130 + ... + 68950691.

It is an arithmetic number, because the mean of its divisors is an integer number (5530089735201).

Almost surely, 2^{22120221200201} is an apocalyptic number.

It is an amenable number.

22120221200201 is a deficient number, since it is larger than the sum of its proper divisors (137740603).

22120221200201 is a wasteful number, since it uses less digits than its factorization.

22120221200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137740602.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22120221200201 its reverse (10200212202122), we get a palindrome (32320433402323).

The spelling of 22120221200201 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty-one million, two hundred thousand, two hundred one".