212811852195 has 12 divisors (see below), whose sum is σ = 368873877216. Its totient is φ = 113499654480.

The previous prime is 212811852133. The next prime is 212811852217. The reversal of 212811852195 is 591258118212.

212811852195 is a `hidden beast` number, since 2 + 1 + 2 + 8 + 118 + 521 + 9 + 5 = 666.

It is not a de Polignac number, because 212811852195 - 2¹⁷ = 212811721123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4729152271 = 212811852195 / (2 + 1 + 2 + 8 + 1 + 1 + 8 + 5 + 2 + 1 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 212811852195.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2364576091 + ... + 2364576180.

It is an arithmetic number, because the mean of its divisors is an integer number (30739489768).

Almost surely, 2^212811852195 is an apocalyptic number.

212811852195 is a deficient number, since it is larger than the sum of its proper divisors (156062025021).

212811852195 is a wasteful number, since it uses less digits than its factorization.

212811852195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4729152282 (or 4729152279 counting only the distinct ones).

The product of its digits is 115200, while the sum is 45.

The spelling of 212811852195 in words is "two hundred twelve billion, eight hundred eleven million, eight hundred fifty-two thousand, one hundred ninety-five".