1121221135 has 16 divisors (see below), whose sum is σ = 1404864000. Its totient is φ = 857428000.

The previous prime is 1121221117. The next prime is 1121221139. The reversal of 1121221135 is 5311221211.

It is not a de Polignac number, because 1121221135 - 2¹⁹ = 1120696847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121221139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343260 + ... + 346510.

It is an arithmetic number, because the mean of its divisors is an integer number (87804000).

Almost surely, 2^1121221135 is an apocalyptic number.

1121221135 is a deficient number, since it is larger than the sum of its proper divisors (283642865).

1121221135 is a wasteful number, since it uses less digits than its factorization.

1121221135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6278.

The product of its digits is 120, while the sum is 19.

The square root of 1121221135 is about 33484.6402847634. The cubic root of 1121221135 is about 1038.8761080635.

Adding to 1121221135 its reverse (5311221211), we get a palindrome (6432442346).

The spelling of 1121221135 in words is "one billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred thirty-five".