212305152515 has 16 divisors (see below), whose sum is σ = 273027924288. Its totient is φ = 158068791936.

The previous prime is 212305152497. The next prime is 212305152523. The reversal of 212305152515 is 515251503212.

212305152515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212305152515 - 2¹⁶ = 212305086979 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 24943472 + ... + 24951981.

It is an arithmetic number, because the mean of its divisors is an integer number (17064245268).

Almost surely, 2^212305152515 is an apocalyptic number.

212305152515 is a deficient number, since it is larger than the sum of its proper divisors (60722771773).

212305152515 is a wasteful number, since it uses less digits than its factorization.

212305152515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49895518.

The product of its (nonzero) digits is 15000, while the sum is 32.

Adding to 212305152515 its reverse (515251503212), we get a palindrome (727556655727).

The spelling of 212305152515 in words is "two hundred twelve billion, three hundred five million, one hundred fifty-two thousand, five hundred fifteen".