11123143321125 has 128 divisors (see below), whose sum is σ = 20855402201088. Its totient is φ = 5215934400000.

The previous prime is 11123143321123. The next prime is 11123143321127. The reversal of 11123143321125 is 52112334132111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11123143321123) and next prime (11123143321127).

It is not a de Polignac number, because 11123143321125 - 2¹ = 11123143321123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11123143321092 and 11123143321101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123143321123) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 220047604 + ... + 220098146.

It is an arithmetic number, because the mean of its divisors is an integer number (162932829696).

Almost surely, 2^{11123143321125} is an apocalyptic number.

11123143321125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11123143321125 is a deficient number, since it is larger than the sum of its proper divisors (9732258879963).

11123143321125 is a wasteful number, since it uses less digits than its factorization.

11123143321125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52324 (or 52314 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

Adding to 11123143321125 its reverse (52112334132111), we get a palindrome (63235477453236).

The spelling of 11123143321125 in words is "eleven trillion, one hundred twenty-three billion, one hundred forty-three million, three hundred twenty-one thousand, one hundred twenty-five".