210023112 has 128 divisors (see below), whose sum is σ = 604800000. Its totient is φ = 60238080.

The previous prime is 210023089. The next prime is 210023113. The reversal of 210023112 is 211320012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (210023113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420639 + ... + 421137.

It is an arithmetic number, because the mean of its divisors is an integer number (4725000).

Almost surely, 2^210023112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210023112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302400000).

210023112 is an abundant number, since it is smaller than the sum of its proper divisors (394776888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210023112 is a wasteful number, since it uses less digits than its factorization.

210023112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 210023112 is about 14492.1741640100. The cubic root of 210023112 is about 594.4140001787.

Adding to 210023112 its reverse (211320012), we get a palindrome (421343124).

The spelling of 210023112 in words is "two hundred ten million, twenty-three thousand, one hundred twelve".