10201000010491 has 2 divisors, whose sum is σ = 10201000010492. Its totient is φ = 10201000010490.

The previous prime is 10201000010489. The next prime is 10201000010549. The reversal of 10201000010491 is 19401000010201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10201000010491 - 2¹ = 10201000010489 is a prime.

It is a super-2 number, since 2×10201000010491² (a number of 27 digits) contains 22 as substring.

Together with 10201000010489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10201000010401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100500005245 + 5100500005246.

It is an arithmetic number, because the mean of its divisors is an integer number (5100500005246).

Almost surely, 2^{10201000010491} is an apocalyptic number.

10201000010491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10201000010491 is an equidigital number, since it uses as much as digits as its factorization.

10201000010491 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 10201000010491 its reverse (19401000010201), we get a palindrome (29602000020692).

The spelling of 10201000010491 in words is "ten trillion, two hundred one billion, ten thousand, four hundred ninety-one".