101992911 has 16 divisors (see below), whose sum is σ = 144309600. Its totient is φ = 63853568.

The previous prime is 101992907. The next prime is 101992921. The reversal of 101992911 is 119299101.

It is a cyclic number.

It is not a de Polignac number, because 101992911 - 2² = 101992907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101992921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23995 + ... + 27923.

It is an arithmetic number, because the mean of its divisors is an integer number (9019350).

Almost surely, 2^101992911 is an apocalyptic number.

101992911 is a deficient number, since it is larger than the sum of its proper divisors (42316689).

101992911 is a wasteful number, since it uses less digits than its factorization.

101992911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4458.

The product of its (nonzero) digits is 1458, while the sum is 33.

The square root of 101992911 is about 10099.1539744674. The cubic root of 101992911 is about 467.2220483565. Note that the first 3 decimals are identical.

The spelling of 101992911 in words is "one hundred one million, nine hundred ninety-two thousand, nine hundred eleven".