1111121040025 has 24 divisors (see below), whose sum is σ = 1410912278424. Its totient is φ = 867697958400.

The previous prime is 1111121040019. The next prime is 1111121040049. The reversal of 1111121040025 is 5200401211111.

It can be written as a sum of positive squares in 12 ways, for example, as 187440507136 + 923680532889 = 432944^2 + 961083^2 .

It is not a de Polignac number, because 1111121040025 - 2³ = 1111121040017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111121039984 and 1111121040011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1867356 + ... + 2389405.

It is an arithmetic number, because the mean of its divisors is an integer number (58788011601).

Almost surely, 2^{1111121040025} is an apocalyptic number.

It is an amenable number.

1111121040025 is a deficient number, since it is larger than the sum of its proper divisors (299791238399).

1111121040025 is a wasteful number, since it uses less digits than its factorization.

1111121040025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257021 (or 4257016 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 1111121040025 its reverse (5200401211111), we get a palindrome (6311522251136).

The spelling of 1111121040025 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, forty thousand, twenty-five".