212902110 has 96 divisors (see below), whose sum is σ = 576605952. Its totient is φ = 54443520.

The previous prime is 212902069. The next prime is 212902111. The reversal of 212902110 is 11209212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212902111) 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 47 ways as a sum of consecutive naturals, for example, 381952 + ... + 382508.

It is an arithmetic number, because the mean of its divisors is an integer number (6006312).

Almost surely, 2^212902110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212902110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288302976).

212902110 is an abundant number, since it is smaller than the sum of its proper divisors (363703842).

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

212902110 is a wasteful number, since it uses less digits than its factorization.

212902110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 212902110 is about 14591.1654777814. The cubic root of 212902110 is about 597.1177599909.

The spelling of 212902110 in words is "two hundred twelve million, nine hundred two thousand, one hundred ten".