101111109999 has 16 divisors (see below), whose sum is σ = 136185752064. Its totient is φ = 66722292000.

The previous prime is 101111109929. The next prime is 101111110021. The reversal of 101111109999 is 999901111101.

It is not a de Polignac number, because 101111109999 - 2¹² = 101111105903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101111109999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101111109929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152414 + ... + 1237044.

It is an arithmetic number, because the mean of its divisors is an integer number (8511609504).

Almost surely, 2^101111109999 is an apocalyptic number.

101111109999 is a deficient number, since it is larger than the sum of its proper divisors (35074642065).

101111109999 is a wasteful number, since it uses less digits than its factorization.

101111109999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88678.

The product of its (nonzero) digits is 6561, while the sum is 42.

The spelling of 101111109999 in words is "one hundred one billion, one hundred eleven million, one hundred nine thousand, nine hundred ninety-nine".