1243102144111 has 4 divisors (see below), whose sum is σ = 1243187180424. Its totient is φ = 1243017107800.

The previous prime is 1243102144057. The next prime is 1243102144159. The reversal of 1243102144111 is 1114412013421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1243102144111 - 2⁹ = 1243102143599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243102144811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42496225 + ... + 42525466.

It is an arithmetic number, because the mean of its divisors is an integer number (310796795106).

Almost surely, 2^{1243102144111} is an apocalyptic number.

1243102144111 is a deficient number, since it is larger than the sum of its proper divisors (85036313).

1243102144111 is an equidigital number, since it uses as much as digits as its factorization.

1243102144111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85036312.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 1243102144111 its reverse (1114412013421), we get a palindrome (2357514157532).

The spelling of 1243102144111 in words is "one trillion, two hundred forty-three billion, one hundred two million, one hundred forty-four thousand, one hundred eleven".