201123111342443 has 2 divisors, whose sum is σ = 201123111342444. Its totient is φ = 201123111342442.

The previous prime is 201123111342397. The next prime is 201123111342451. The reversal of 201123111342443 is 344243111321102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201123111342443 - 2²⁴ = 201123094565227 is a prime.

It is a super-2 number, since 2×201123111342443² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201123111342143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561555671221 + 100561555671222.

It is an arithmetic number, because the mean of its divisors is an integer number (100561555671222).

Almost surely, 2^{201123111342443} is an apocalyptic number.

201123111342443 is a deficient number, since it is larger than the sum of its proper divisors (1).

201123111342443 is an equidigital number, since it uses as much as digits as its factorization.

201123111342443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 201123111342443 its reverse (344243111321102), we get a palindrome (545366222663545).

The spelling of 201123111342443 in words is "two hundred one trillion, one hundred twenty-three billion, one hundred eleven million, three hundred forty-two thousand, four hundred forty-three".