102000123021191 has 2 divisors, whose sum is σ = 102000123021192. Its totient is φ = 102000123021190.

The previous prime is 102000123021149. The next prime is 102000123021253. The reversal of 102000123021191 is 191120321000201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102000123021191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102000123021131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51000061510595 + 51000061510596.

It is an arithmetic number, because the mean of its divisors is an integer number (51000061510596).

Almost surely, 2^{102000123021191} is an apocalyptic number.

102000123021191 is a deficient number, since it is larger than the sum of its proper divisors (1).

102000123021191 is an equidigital number, since it uses as much as digits as its factorization.

102000123021191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 102000123021191 its reverse (191120321000201), we get a palindrome (293120444021392).

The spelling of 102000123021191 in words is "one hundred two trillion, one hundred twenty-three million, twenty-one thousand, one hundred ninety-one".