201100221112001 has 2 divisors, whose sum is σ = 201100221112002. Its totient is φ = 201100221112000.

The previous prime is 201100221111949. The next prime is 201100221112003. The reversal of 201100221112001 is 100211122001102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104577927532225 + 96522293579776 = 10226335^2 + 9824576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201100221112001 is a prime.

Together with 201100221112003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201100221112003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550110556000 + 100550110556001.

It is an arithmetic number, because the mean of its divisors is an integer number (100550110556001).

Almost surely, 2^{201100221112001} is an apocalyptic number.

It is an amenable number.

201100221112001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201100221112001 is an equidigital number, since it uses as much as digits as its factorization.

201100221112001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201100221112001 its reverse (100211122001102), we get a palindrome (301311343113103).

The spelling of 201100221112001 in words is "two hundred one trillion, one hundred billion, two hundred twenty-one million, one hundred twelve thousand, one".