11121123225 has 24 divisors (see below), whose sum is σ = 19354659040. Its totient is φ = 5619093120.

The previous prime is 11121123197. The next prime is 11121123227. The reversal of 11121123225 is 52232112111.

It is not a de Polignac number, because 11121123225 - 2⁵ = 11121123193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11121123227) 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, 3900724 + ... + 3903573.

Almost surely, 2^11121123225 is an apocalyptic number.

11121123225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11121123225 is a deficient number, since it is larger than the sum of its proper divisors (8233535815).

11121123225 is a wasteful number, since it uses less digits than its factorization.

11121123225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7804329 (or 7804324 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

Adding to 11121123225 its reverse (52232112111), we get a palindrome (63353235336).

The spelling of 11121123225 in words is "eleven billion, one hundred twenty-one million, one hundred twenty-three thousand, two hundred twenty-five".