101130109991 has 2 divisors, whose sum is σ = 101130109992. Its totient is φ = 101130109990.

The previous prime is 101130109981. The next prime is 101130110023. The reversal of 101130109991 is 199901031101.

It is a weak prime.

It is an emirp because it is prime and its reverse (199901031101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101130109991 - 2¹⁰ = 101130108967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101130109931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50565054995 + 50565054996.

It is an arithmetic number, because the mean of its divisors is an integer number (50565054996).

Almost surely, 2^101130109991 is an apocalyptic number.

101130109991 is a deficient number, since it is larger than the sum of its proper divisors (1).

101130109991 is an equidigital number, since it uses as much as digits as its factorization.

101130109991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 35.

The spelling of 101130109991 in words is "one hundred one billion, one hundred thirty million, one hundred nine thousand, nine hundred ninety-one".