111211022002001 has 2 divisors, whose sum is σ = 111211022002002. Its totient is φ = 111211022002000.

The previous prime is 111211022001971. The next prime is 111211022002019. The reversal of 111211022002001 is 100200220112111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94820386355776 + 16390635646225 = 9737576^2 + 4048535^2 .

It is a cyclic number.

It is not a de Polignac number, because 111211022002001 - 2¹⁴ = 111211021985617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (111211022002021) 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 as a sum of consecutive naturals, namely, 55605511001000 + 55605511001001.

It is an arithmetic number, because the mean of its divisors is an integer number (55605511001001).

Almost surely, 2^{111211022002001} is an apocalyptic number.

It is an amenable number.

111211022002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

111211022002001 is an equidigital number, since it uses as much as digits as its factorization.

111211022002001 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 111211022002001 its reverse (100200220112111), we get a palindrome (211411242114112).

The spelling of 111211022002001 in words is "one hundred eleven trillion, two hundred eleven billion, twenty-two million, two thousand, one".