212012145530 has 16 divisors (see below), whose sum is σ = 383333174784. Its totient is φ = 84424566480.

The previous prime is 212012145497. The next prime is 212012145551. The reversal of 212012145530 is 35541210212.

It is a self number, because there is not a number n which added to its sum of digits gives 212012145530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47534126 + ... + 47538585.

It is an arithmetic number, because the mean of its divisors is an integer number (23958323424).

Almost surely, 2^212012145530 is an apocalyptic number.

212012145530 is a deficient number, since it is larger than the sum of its proper divisors (171321029254).

212012145530 is a wasteful number, since it uses less digits than its factorization.

212012145530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95072941.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 212012145530 its reverse (35541210212), we get a palindrome (247553355742).

The spelling of 212012145530 in words is "two hundred twelve billion, twelve million, one hundred forty-five thousand, five hundred thirty".