212125808 has 40 divisors (see below), whose sum is σ = 428722560. Its totient is φ = 101560320.

The previous prime is 212125799. The next prime is 212125817. The reversal of 212125808 is 808521212.

It is a happy number.

212125808 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212125799) and next prime (212125817).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 45908 + ... + 50316.

It is an arithmetic number, because the mean of its divisors is an integer number (10718064).

Almost surely, 2^212125808 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 212125808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214361280).

212125808 is an abundant number, since it is smaller than the sum of its proper divisors (216596752).

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

212125808 is a wasteful number, since it uses less digits than its factorization.

212125808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545 (or 4539 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 212125808 is about 14564.5394022605. The cubic root of 212125808 is about 596.3911220387.

The spelling of 212125808 in words is "two hundred twelve million, one hundred twenty-five thousand, eight hundred eight".