212131510115 has 32 divisors (see below), whose sum is σ = 291935508480. Its totient is φ = 144956275200.

The previous prime is 212131510093. The next prime is 212131510121. The reversal of 212131510115 is 511015131212.

212131510115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212131510115 - 2¹² = 212131506019 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13528730 + ... + 13544400.

It is an arithmetic number, because the mean of its divisors is an integer number (9122984640).

Almost surely, 2^212131510115 is an apocalyptic number.

212131510115 is a deficient number, since it is larger than the sum of its proper divisors (79803998365).

212131510115 is a wasteful number, since it uses less digits than its factorization.

212131510115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17003.

The product of its (nonzero) digits is 300, while the sum is 23.

Adding to 212131510115 its reverse (511015131212), we get a palindrome (723146641327).

The spelling of 212131510115 in words is "two hundred twelve billion, one hundred thirty-one million, five hundred ten thousand, one hundred fifteen".