101011109903 has 4 divisors (see below), whose sum is σ = 110193938088. Its totient is φ = 91828281720.

The previous prime is 101011109863. The next prime is 101011109921. The reversal of 101011109903 is 309901110101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101011109903 - 2²⁸ = 100742674447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101011109923) 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 in 3 ways as a sum of consecutive naturals, for example, 4591414076 + ... + 4591414097.

It is an arithmetic number, because the mean of its divisors is an integer number (27548484522).

Almost surely, 2^101011109903 is an apocalyptic number.

101011109903 is a deficient number, since it is larger than the sum of its proper divisors (9182828185).

101011109903 is an equidigital number, since it uses as much as digits as its factorization.

101011109903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9182828184.

The product of its (nonzero) digits is 243, while the sum is 26.

The spelling of 101011109903 in words is "one hundred one billion, eleven million, one hundred nine thousand, nine hundred three".