201043421191 has 2 divisors, whose sum is σ = 201043421192. Its totient is φ = 201043421190.

The previous prime is 201043421179. The next prime is 201043421209. The reversal of 201043421191 is 191124340102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201043421191 - 2⁹ = 201043420679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201043421171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100521710595 + 100521710596.

It is an arithmetic number, because the mean of its divisors is an integer number (100521710596).

Almost surely, 2^201043421191 is an apocalyptic number.

201043421191 is a deficient number, since it is larger than the sum of its proper divisors (1).

201043421191 is an equidigital number, since it uses as much as digits as its factorization.

201043421191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 201043421191 its reverse (191124340102), we get a palindrome (392167761293).

The spelling of 201043421191 in words is "two hundred one billion, forty-three million, four hundred twenty-one thousand, one hundred ninety-one".