212011001010191 has 4 divisors (see below), whose sum is σ = 212117700056472. Its totient is φ = 211904301963912.

The previous prime is 212011001010169. The next prime is 212011001010209. The reversal of 212011001010191 is 191010100110212.

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 212011001010191 - 2¹⁴ = 212011000993807 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 (212011001010091) 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, 53349520160 + ... + 53349524133.

It is an arithmetic number, because the mean of its divisors is an integer number (53029425014118).

Almost surely, 2^{212011001010191} is an apocalyptic number.

212011001010191 is a deficient number, since it is larger than the sum of its proper divisors (106699046281).

212011001010191 is a wasteful number, since it uses less digits than its factorization.

212011001010191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106699046280.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 212011001010191 in words is "two hundred twelve trillion, eleven billion, one million, ten thousand, one hundred ninety-one".