212813063237 has 4 divisors (see below), whose sum is σ = 212865626700. Its totient is φ = 212760499776.

The previous prime is 212813063191. The next prime is 212813063257. The reversal of 212813063237 is 732360318212.

It is a happy number.

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 43584495361 + 169228567876 = 208769^2 + 411374^2 .

It is a cyclic number.

It is not a de Polignac number, because 212813063237 - 2⁶ = 212813063173 is a prime.

It is a super-3 number, since 3×212813063237³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212813063237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212813063257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26275658 + ... + 26283755.

It is an arithmetic number, because the mean of its divisors is an integer number (53216406675).

Almost surely, 2^212813063237 is an apocalyptic number.

It is an amenable number.

212813063237 is a deficient number, since it is larger than the sum of its proper divisors (52563463).

212813063237 is an equidigital number, since it uses as much as digits as its factorization.

212813063237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52563462.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 212813063237 in words is "two hundred twelve billion, eight hundred thirteen million, sixty-three thousand, two hundred thirty-seven".