201010221187 has 2 divisors, whose sum is σ = 201010221188. Its totient is φ = 201010221186.

The previous prime is 201010221151. The next prime is 201010221227. The reversal of 201010221187 is 781122010102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201010221187 - 2²³ = 201001832579 is a prime.

It is not a weakly prime, because it can be changed into another prime (201010221107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505110593 + 100505110594.

It is an arithmetic number, because the mean of its divisors is an integer number (100505110594).

Almost surely, 2^201010221187 is an apocalyptic number.

201010221187 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010221187 is an equidigital number, since it uses as much as digits as its factorization.

201010221187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 201010221187 its reverse (781122010102), we get a palindrome (982132231289).

The spelling of 201010221187 in words is "two hundred one billion, ten million, two hundred twenty-one thousand, one hundred eighty-seven".