212126661711 has 12 divisors (see below), whose sum is σ = 306559408792. Its totient is φ = 141346591056.

The previous prime is 212126661661. The next prime is 212126661781. The reversal of 212126661711 is 117166621212.

It is not a de Polignac number, because 212126661711 - 2¹⁰ = 212126660687 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 (212126661781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5913076 + ... + 5948841.

Almost surely, 2^212126661711 is an apocalyptic number.

212126661711 is a deficient number, since it is larger than the sum of its proper divisors (94432747081).

212126661711 is a wasteful number, since it uses less digits than its factorization.

212126661711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11863910 (or 11863907 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The spelling of 212126661711 in words is "two hundred twelve billion, one hundred twenty-six million, six hundred sixty-one thousand, seven hundred eleven".