212110125 has 32 divisors (see below), whose sum is σ = 354566784. Its totient is φ = 112608000.

The previous prime is 212110123. The next prime is 212110127. The reversal of 212110125 is 521011212.

It is an interprime number because it is at equal distance from previous prime (212110123) and next prime (212110127).

It is not a de Polignac number, because 212110125 - 2¹ = 212110123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212110121) 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 31 ways as a sum of consecutive naturals, for example, 89202 + ... + 91548.

It is an arithmetic number, because the mean of its divisors is an integer number (11080212).

Almost surely, 2^212110125 is an apocalyptic number.

212110125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212110125 is a deficient number, since it is larger than the sum of its proper divisors (142456659).

212110125 is a wasteful number, since it uses less digits than its factorization.

212110125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606 (or 2596 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 212110125 is about 14564.0009956056. Note that the first 3 decimals coincide. The cubic root of 212110125 is about 596.3764241061.

Adding to 212110125 its reverse (521011212), we get a palindrome (733121337).

It can be divided in two parts, 2121 and 10125, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 212110125 in words is "two hundred twelve million, one hundred ten thousand, one hundred twenty-five".