10001010001091 has 2 divisors, whose sum is σ = 10001010001092. Its totient is φ = 10001010001090.

The previous prime is 10001010001049. The next prime is 10001010001111. The reversal of 10001010001091 is 19010001010001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10001010001091 - 2⁶ = 10001010001027 is a prime.

It is not a weakly prime, because it can be changed into another prime (10001010007091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000505000545 + 5000505000546.

It is an arithmetic number, because the mean of its divisors is an integer number (5000505000546).

Almost surely, 2^{10001010001091} is an apocalyptic number.

10001010001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001010001091 is an equidigital number, since it uses as much as digits as its factorization.

10001010001091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 14.

Adding to 10001010001091 its reverse (19010001010001), we get a palindrome (29011011011092).

The spelling of 10001010001091 in words is "ten trillion, one billion, ten million, one thousand, ninety-one".