20020102110191 has 2 divisors, whose sum is σ = 20020102110192. Its totient is φ = 20020102110190.

The previous prime is 20020102110109. The next prime is 20020102110247. The reversal of 20020102110191 is 19101120102002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20020102110191 - 2¹⁴ = 20020102093807 is a prime.

It is a super-2 number, since 2×20020102110191² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020102110691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010051055095 + 10010051055096.

It is an arithmetic number, because the mean of its divisors is an integer number (10010051055096).

Almost surely, 2^{20020102110191} is an apocalyptic number.

20020102110191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020102110191 is an equidigital number, since it uses as much as digits as its factorization.

20020102110191 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 20.

Adding to 20020102110191 its reverse (19101120102002), we get a palindrome (39121222212193).

The spelling of 20020102110191 in words is "twenty trillion, twenty billion, one hundred two million, one hundred ten thousand, one hundred ninety-one".