211209678147 has 16 divisors (see below), whose sum is σ = 303288903680. Its totient is φ = 129969414432.

The previous prime is 211209678107. The next prime is 211209678149. The reversal of 211209678147 is 741876902112.

211209678147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211209678147 - 2¹⁰ = 211209677123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211209678096 and 211209678105.

It is not an unprimeable number, because it can be changed into a prime (211209678149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 873054 + ... + 1088412.

It is an arithmetic number, because the mean of its divisors is an integer number (18955556480).

Almost surely, 2^211209678147 is an apocalyptic number.

211209678147 is a deficient number, since it is larger than the sum of its proper divisors (92079225533).

211209678147 is a wasteful number, since it uses less digits than its factorization.

211209678147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240522.

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 211209678147 in words is "two hundred eleven billion, two hundred nine million, six hundred seventy-eight thousand, one hundred forty-seven".