2001212111207 has 2 divisors, whose sum is σ = 2001212111208. Its totient is φ = 2001212111206.

The previous prime is 2001212111141. The next prime is 2001212111219. The reversal of 2001212111207 is 7021112121002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001212111207 - 2²⁶ = 2001145002343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001212111287) 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, 1000606055603 + 1000606055604.

It is an arithmetic number, because the mean of its divisors is an integer number (1000606055604).

Almost surely, 2^{2001212111207} is an apocalyptic number.

2001212111207 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001212111207 is an equidigital number, since it uses as much as digits as its factorization.

2001212111207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 2001212111207 its reverse (7021112121002), we get a palindrome (9022324232209).

The spelling of 2001212111207 in words is "two trillion, one billion, two hundred twelve million, one hundred eleven thousand, two hundred seven".