211012200191 has 4 divisors (see below), whose sum is σ = 227243907912. Its totient is φ = 194780492472.

The previous prime is 211012200181. The next prime is 211012200197. The reversal of 211012200191 is 191002210112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211012200191 - 2¹⁴ = 211012183807 is a prime.

It is a super-2 number, since 2×211012200191² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012200197) 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, 8115853841 + ... + 8115853866.

It is an arithmetic number, because the mean of its divisors is an integer number (56810976978).

Almost surely, 2^211012200191 is an apocalyptic number.

211012200191 is a deficient number, since it is larger than the sum of its proper divisors (16231707721).

211012200191 is a wasteful number, since it uses less digits than its factorization.

211012200191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16231707720.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 211012200191 in words is "two hundred eleven billion, twelve million, two hundred thousand, one hundred ninety-one".