212787470213 has 4 divisors (see below), whose sum is σ = 212808971628. Its totient is φ = 212765968800.

The previous prime is 212787470179. The next prime is 212787470219. The reversal of 212787470213 is 312074787212.

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 138114803044 + 74672667169 = 371638^2 + 273263^2 .

It is a cyclic number.

It is not a de Polignac number, because 212787470213 - 2¹² = 212787466117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212787470219) 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, 10735856 + ... + 10755657.

It is an arithmetic number, because the mean of its divisors is an integer number (53202242907).

Almost surely, 2^212787470213 is an apocalyptic number.

It is an amenable number.

212787470213 is a deficient number, since it is larger than the sum of its proper divisors (21501415).

212787470213 is an equidigital number, since it uses as much as digits as its factorization.

212787470213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21501414.

The product of its (nonzero) digits is 263424, while the sum is 44.

The spelling of 212787470213 in words is "two hundred twelve billion, seven hundred eighty-seven million, four hundred seventy thousand, two hundred thirteen".