101110109987 has 2 divisors, whose sum is σ = 101110109988. Its totient is φ = 101110109986.

The previous prime is 101110109983. The next prime is 101110110037. The reversal of 101110109987 is 789901011101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101110109987 - 2² = 101110109983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101110109987.

It is not a weakly prime, because it can be changed into another prime (101110109983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555054993 + 50555054994.

It is an arithmetic number, because the mean of its divisors is an integer number (50555054994).

Almost surely, 2^101110109987 is an apocalyptic number.

101110109987 is a deficient number, since it is larger than the sum of its proper divisors (1).

101110109987 is an equidigital number, since it uses as much as digits as its factorization.

101110109987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 38.

The spelling of 101110109987 in words is "one hundred one billion, one hundred ten million, one hundred nine thousand, nine hundred eighty-seven".