212125510 has 16 divisors (see below), whose sum is σ = 382417200. Its totient is φ = 84718816.

The previous prime is 212125499. The next prime is 212125531. The reversal of 212125510 is 15521212.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9505 + ... + 22684.

It is an arithmetic number, because the mean of its divisors is an integer number (23901075).

Almost surely, 2^212125510 is an apocalyptic number.

212125510 is a deficient number, since it is larger than the sum of its proper divisors (170291690).

212125510 is a wasteful number, since it uses less digits than its factorization.

212125510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32855.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 212125510 is about 14564.5291719300. The cubic root of 212125510 is about 596.3908427632.

Adding to 212125510 its reverse (15521212), we get a palindrome (227646722).

The spelling of 212125510 in words is "two hundred twelve million, one hundred twenty-five thousand, five hundred ten".