212688581035250 has 16 divisors (see below), whose sum is σ = 398153023698456. Its totient is φ = 85075432414000.

The previous prime is 212688581035181. The next prime is 212688581035253. The reversal of 212688581035250 is 52530185886212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13508057959561 + 199180523075689 = 3675331^2 + 14113133^2 .

It is not an unprimeable number, because it can be changed into a prime (212688581035253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425377161821 + ... + 425377162320.

Almost surely, 2^{212688581035250} is an apocalyptic number.

212688581035250 is a deficient number, since it is larger than the sum of its proper divisors (185464442663206).

212688581035250 is an equidigital number, since it uses as much as digits as its factorization.

212688581035250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850754324158 (or 850754324148 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 56.

The spelling of 212688581035250 in words is "two hundred twelve trillion, six hundred eighty-eight billion, five hundred eighty-one million, thirty-five thousand, two hundred fifty".