101912 has 8 divisors (see below), whose sum is σ = 191100. Its totient is φ = 50952.

The previous prime is 101891. The next prime is 101917. The reversal of 101912 is 219101.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6362 + ... + 6377.

2¹⁰¹⁹¹² is an apocalyptic number.

It is an amenable number.

101912 is a deficient number, since it is larger than the sum of its proper divisors (89188).

101912 is a wasteful number, since it uses less digits than its factorization.

101912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12745 (or 12741 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 101912 is about 319.2365893816. The cubic root of 101912 is about 46.7098466552.

Adding to 101912 its sum of digits (14), we get a triangular number (101926 = T₄₅₁).

The spelling of 101912 in words is "one hundred one thousand, nine hundred twelve".