22011221120201 has 4 divisors (see below), whose sum is σ = 23305998833172. Its totient is φ = 20716443407232.

The previous prime is 22011221120173. The next prime is 22011221120219. The reversal of 22011221120201 is 10202112211022.

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 13621827482176 + 8389393638025 = 3690776^2 + 2896445^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011221120201 - 2²⁶ = 22011154011337 is a prime.

It is a super-3 number, since 3×22011221120201³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1294777712953 = 22011221120201 / (2 + 2 + 0 + 1 + 1 + 2 + 2 + 1 + 1 + 2 + 0 + 2 + 0 + 1).

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 22011221120201.

It is not an unprimeable number, because it can be changed into a prime (22011221120221) 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, 647388856460 + ... + 647388856493.

It is an arithmetic number, because the mean of its divisors is an integer number (5826499708293).

Almost surely, 2^{22011221120201} is an apocalyptic number.

It is an amenable number.

22011221120201 is a deficient number, since it is larger than the sum of its proper divisors (1294777712971).

22011221120201 is a wasteful number, since it uses less digits than its factorization.

22011221120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294777712970.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22011221120201 its reverse (10202112211022), we get a palindrome (32213333331223).

The spelling of 22011221120201 in words is "twenty-two trillion, eleven billion, two hundred twenty-one million, one hundred twenty thousand, two hundred one".