22111100002001 has 2 divisors, whose sum is σ = 22111100002002. Its totient is φ = 22111100002000.

The previous prime is 22111100001901. The next prime is 22111100002067. The reversal of 22111100002001 is 10020000111122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20526834729025 + 1584265272976 = 4530655^2 + 1258676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22111100002001 is a prime.

It is not a weakly prime, because it can be changed into another prime (22111100002091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055550001000 + 11055550001001.

It is an arithmetic number, because the mean of its divisors is an integer number (11055550001001).

Almost surely, 2^{22111100002001} is an apocalyptic number.

It is an amenable number.

22111100002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111100002001 is an equidigital number, since it uses as much as digits as its factorization.

22111100002001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22111100002001 its reverse (10020000111122), we get a palindrome (32131100113123).

The spelling of 22111100002001 in words is "twenty-two trillion, one hundred eleven billion, one hundred million, two thousand, one".