210999112 has 8 divisors (see below), whose sum is σ = 395623350. Its totient is φ = 105499552.

The previous prime is 210999101. The next prime is 210999119. The reversal of 210999112 is 211999012.

210999112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 174927076 + 36072036 = 13226^2 + 6006^2 .

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

It is not an unprimeable number, because it can be changed into a prime (210999119) 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 as a sum of consecutive naturals, namely, 13187437 + ... + 13187452.

Almost surely, 2^210999112 is an apocalyptic number.

It is an amenable number.

210999112 is a deficient number, since it is larger than the sum of its proper divisors (184624238).

210999112 is a wasteful number, since it uses less digits than its factorization.

210999112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26374895 (or 26374891 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 210999112 is about 14525.8084800812. The cubic root of 210999112 is about 595.3333461520. Note that the first 4 decimals are identical.

The spelling of 210999112 in words is "two hundred ten million, nine hundred ninety-nine thousand, one hundred twelve".