210212125 has 16 divisors (see below), whose sum is σ = 268749936. Its totient is φ = 164064000.

The previous prime is 210212047. The next prime is 210212131. The reversal of 210212125 is 521212012.

It is a happy number.

210212125 is digitally balanced in base 2, 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 8 ways, for example, as 97555129 + 112656996 = 9877^2 + 10614^2 .

It is not a de Polignac number, because 210212125 - 2¹³ = 210203933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210212099 and 210212108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15384 + ... + 25633.

It is an arithmetic number, because the mean of its divisors is an integer number (16796871).

Almost surely, 2^210212125 is an apocalyptic number.

210212125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210212125 is a deficient number, since it is larger than the sum of its proper divisors (58537811).

210212125 is an equidigital number, since it uses as much as digits as its factorization.

210212125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41073 (or 41063 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 210212125 is about 14498.6939066938. The cubic root of 210212125 is about 594.5922635532.

Adding to 210212125 its reverse (521212012), we get a palindrome (731424137).

The spelling of 210212125 in words is "two hundred ten million, two hundred twelve thousand, one hundred twenty-five".