1121101112125 has 8 divisors (see below), whose sum is σ = 1399134188088. Its totient is φ = 896880889600.

The previous prime is 1121101112119. The next prime is 1121101112161. The reversal of 1121101112125 is 5212111011211.

It can be written as a sum of positive squares in 4 ways, for example, as 23773630969 + 1097327481156 = 154187^2 + 1047534^2 .

It is not a de Polignac number, because 1121101112125 - 2¹⁷ = 1121100981053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4484404324 + ... + 4484404573.

It is an arithmetic number, because the mean of its divisors is an integer number (174891773511).

Almost surely, 2^{1121101112125} is an apocalyptic number.

It is an amenable number.

1121101112125 is a deficient number, since it is larger than the sum of its proper divisors (278033075963).

1121101112125 is an frugal number, since it uses more digits than its factorization.

1121101112125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8968808912 (or 8968808902 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 19.

Adding to 1121101112125 its reverse (5212111011211), we get a palindrome (6333212123336).

The spelling of 1121101112125 in words is "one trillion, one hundred twenty-one billion, one hundred one million, one hundred twelve thousand, one hundred twenty-five".