1121100425 has 24 divisors (see below), whose sum is σ = 1411289880. Its totient is φ = 883353600.

The previous prime is 1121100413. The next prime is 1121100427. The reversal of 1121100425 is 5240011211.

It can be written as a sum of positive squares in 12 ways, for example, as 305655289 + 815445136 = 17483^2 + 28556^2 .

It is not a de Polignac number, because 1121100425 - 2¹⁰ = 1121099401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121100427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492089 + ... + 494361.

It is an arithmetic number, because the mean of its divisors is an integer number (58803745).

Almost surely, 2^1121100425 is an apocalyptic number.

It is an amenable number.

1121100425 is a deficient number, since it is larger than the sum of its proper divisors (290189455).

1121100425 is a wasteful number, since it uses less digits than its factorization.

1121100425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2568 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1121100425 is about 33482.8377680268. The cubic root of 1121100425 is about 1038.8388251310.

Adding to 1121100425 its reverse (5240011211), we get a palindrome (6361111636).

The spelling of 1121100425 in words is "one billion, one hundred twenty-one million, one hundred thousand, four hundred twenty-five".