101101000991 has 2 divisors, whose sum is σ = 101101000992. Its totient is φ = 101101000990.

The previous prime is 101101000961. The next prime is 101101001033. The reversal of 101101000991 is 199000101101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101101000991 - 2⁶ = 101101000927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101101000961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50550500495 + 50550500496.

It is an arithmetic number, because the mean of its divisors is an integer number (50550500496).

Almost surely, 2^101101000991 is an apocalyptic number.

101101000991 is a deficient number, since it is larger than the sum of its proper divisors (1).

101101000991 is an equidigital number, since it uses as much as digits as its factorization.

101101000991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 23.

It can be divided in two parts, 10110 and 1000991, that added together give a palindrome (1011101).

The spelling of 101101000991 in words is "one hundred one billion, one hundred one million, nine hundred ninety-one", and thus it is an aban number.