1121221125 has 48 divisors (see below), whose sum is σ = 2027967552. Its totient is φ = 595980000.

The previous prime is 1121221117. The next prime is 1121221139. The reversal of 1121221125 is 5211221211.

It is not a de Polignac number, because 1121221125 - 2³ = 1121221117 is a prime.

It is a super-2 number, since 2×1121221125² = 2514273622292531250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121221098 and 1121221107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 370870 + ... + 373880.

It is an arithmetic number, because the mean of its divisors is an integer number (42249324).

Almost surely, 2^1121221125 is an apocalyptic number.

1121221125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121221125 is a deficient number, since it is larger than the sum of its proper divisors (906746427).

1121221125 is a wasteful number, since it uses less digits than its factorization.

1121221125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3363 (or 3350 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 1121221125 is about 33484.6401354412. The cubic root of 1121221125 is about 1038.8761049750.

Adding to 1121221125 its reverse (5211221211), we get a palindrome (6332442336).

The spelling of 1121221125 in words is "one billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-five".