22001201221201 has 4 divisors (see below), whose sum is σ = 22001229288432. Its totient is φ = 22001173153972.

The previous prime is 22001201221199. The next prime is 22001201221211. The reversal of 22001201221201 is 10212210210022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22001201221201 - 2¹ = 22001201221199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22001201221211) 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, 12822991 + ... + 14437156.

It is an arithmetic number, because the mean of its divisors is an integer number (5500307322108).

Almost surely, 2^{22001201221201} is an apocalyptic number.

It is an amenable number.

22001201221201 is a deficient number, since it is larger than the sum of its proper divisors (28067231).

22001201221201 is an equidigital number, since it uses as much as digits as its factorization.

22001201221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28067230.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22001201221201 its reverse (10212210210022), we get a palindrome (32213411431223).

The spelling of 22001201221201 in words is "twenty-two trillion, one billion, two hundred one million, two hundred twenty-one thousand, two hundred one".