201151001243 has 2 divisors, whose sum is σ = 201151001244. Its totient is φ = 201151001242.

The previous prime is 201151001213. The next prime is 201151001357. The reversal of 201151001243 is 342100151102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201151001243 - 2²⁸ = 200882565787 is a prime.

It is a super-2 number, since 2×201151001243² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201151001213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100575500621 + 100575500622.

It is an arithmetic number, because the mean of its divisors is an integer number (100575500622).

Almost surely, 2^201151001243 is an apocalyptic number.

201151001243 is a deficient number, since it is larger than the sum of its proper divisors (1).

201151001243 is an equidigital number, since it uses as much as digits as its factorization.

201151001243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 201151001243 its reverse (342100151102), we get a palindrome (543251152345).

The spelling of 201151001243 in words is "two hundred one billion, one hundred fifty-one million, one thousand, two hundred forty-three".