20002012121191 has 2 divisors, whose sum is σ = 20002012121192. Its totient is φ = 20002012121190.

The previous prime is 20002012121177. The next prime is 20002012121293. The reversal of 20002012121191 is 19112121020002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20002012121191 - 2²⁹ = 20001475250279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002012124191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001006060595 + 10001006060596.

It is an arithmetic number, because the mean of its divisors is an integer number (10001006060596).

Almost surely, 2^{20002012121191} is an apocalyptic number.

20002012121191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002012121191 is an equidigital number, since it uses as much as digits as its factorization.

20002012121191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 20002012121191 its reverse (19112121020002), we get a palindrome (39114133141193).

The spelling of 20002012121191 in words is "twenty trillion, two billion, twelve million, one hundred twenty-one thousand, one hundred ninety-one".