2002100021191 has 2 divisors, whose sum is σ = 2002100021192. Its totient is φ = 2002100021190.

The previous prime is 2002100021189. The next prime is 2002100021219. The reversal of 2002100021191 is 1911200012002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2002100021191 - 2¹ = 2002100021189 is a prime.

Together with 2002100021189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002100021291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001050010595 + 1001050010596.

It is an arithmetic number, because the mean of its divisors is an integer number (1001050010596).

Almost surely, 2^{2002100021191} is an apocalyptic number.

2002100021191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002100021191 is an equidigital number, since it uses as much as digits as its factorization.

2002100021191 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 19.

Adding to 2002100021191 its reverse (1911200012002), we get a palindrome (3913300033193).

The spelling of 2002100021191 in words is "two trillion, two billion, one hundred million, twenty-one thousand, one hundred ninety-one".