201000212191 has 2 divisors, whose sum is σ = 201000212192. Its totient is φ = 201000212190.

The previous prime is 201000212143. The next prime is 201000212207. The reversal of 201000212191 is 191212000102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201000212191 - 2¹¹ = 201000210143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201000212291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500106095 + 100500106096.

It is an arithmetic number, because the mean of its divisors is an integer number (100500106096).

Almost surely, 2^201000212191 is an apocalyptic number.

201000212191 is a deficient number, since it is larger than the sum of its proper divisors (1).

201000212191 is an equidigital number, since it uses as much as digits as its factorization.

201000212191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 201000212191 its reverse (191212000102), we get a palindrome (392212212293).

The spelling of 201000212191 in words is "two hundred one billion, two hundred twelve thousand, one hundred ninety-one".