212351512333265 has 4 divisors (see below), whose sum is σ = 254821814799924. Its totient is φ = 169881209866608.

The previous prime is 212351512333249. The next prime is 212351512333351. The reversal of 212351512333265 is 562333215153212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41739404044816 + 170612108288449 = 6460604^2 + 13061857^2 .

It is a cyclic number.

It is not a de Polignac number, because 212351512333265 - 2⁴ = 212351512333249 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 (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21235151233322 + ... + 21235151233331.

It is an arithmetic number, because the mean of its divisors is an integer number (63705453699981).

Almost surely, 2^{212351512333265} is an apocalyptic number.

It is an amenable number.

212351512333265 is a deficient number, since it is larger than the sum of its proper divisors (42470302466659).

212351512333265 is an equidigital number, since it uses as much as digits as its factorization.

212351512333265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42470302466658.

The product of its digits is 972000, while the sum is 44.

Adding to 212351512333265 its reverse (562333215153212), we get a palindrome (774684727486477).

The spelling of 212351512333265 in words is "two hundred twelve trillion, three hundred fifty-one billion, five hundred twelve million, three hundred thirty-three thousand, two hundred sixty-five".