11111243403124 has 6 divisors (see below), whose sum is σ = 19444675955474. Its totient is φ = 5555621701560.

The previous prime is 11111243403097. The next prime is 11111243403131. The reversal of 11111243403124 is 42130434211111.

It can be written as a sum of positive squares in only one way, i.e., 6453286670224 + 4657956732900 = 2540332^2 + 2158230^2 .

It is a super-3 number, since 3×11111243403124³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11111243403092 and 11111243403101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388905425387 + ... + 1388905425394.

Almost surely, 2^{11111243403124} is an apocalyptic number.

It is an amenable number.

11111243403124 is a deficient number, since it is larger than the sum of its proper divisors (8333432552350).

11111243403124 is a wasteful number, since it uses less digits than its factorization.

11111243403124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777810850785 (or 2777810850783 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 11111243403124 its reverse (42130434211111), we get a palindrome (53241677614235).

The spelling of 11111243403124 in words is "eleven trillion, one hundred eleven billion, two hundred forty-three million, four hundred three thousand, one hundred twenty-four".