100211021121191 has 2 divisors, whose sum is σ = 100211021121192. Its totient is φ = 100211021121190.

The previous prime is 100211021121163. The next prime is 100211021121193. The reversal of 100211021121191 is 191121120112001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100211021121191 is a prime.

Together with 100211021121193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100211021121193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50105510560595 + 50105510560596.

It is an arithmetic number, because the mean of its divisors is an integer number (50105510560596).

Almost surely, 2^{100211021121191} is an apocalyptic number.

100211021121191 is a deficient number, since it is larger than the sum of its proper divisors (1).

100211021121191 is an equidigital number, since it uses as much as digits as its factorization.

100211021121191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 23.

Adding to 100211021121191 its reverse (191121120112001), we get a palindrome (291332141233192).

The spelling of 100211021121191 in words is "one hundred trillion, two hundred eleven billion, twenty-one million, one hundred twenty-one thousand, one hundred ninety-one".