1121409235 has 4 divisors (see below), whose sum is σ = 1345691088. Its totient is φ = 897127384.

The previous prime is 1121409227. The next prime is 1121409239. The reversal of 1121409235 is 5329041211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5329041211 = 13 ⋅409926247.

It is a cyclic number.

It is not a de Polignac number, because 1121409235 - 2³ = 1121409227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121409239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112140919 + ... + 112140928.

It is an arithmetic number, because the mean of its divisors is an integer number (336422772).

Almost surely, 2^1121409235 is an apocalyptic number.

1121409235 is a deficient number, since it is larger than the sum of its proper divisors (224281853).

1121409235 is an equidigital number, since it uses as much as digits as its factorization.

1121409235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224281852.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1121409235 is about 33487.4489174676. The cubic root of 1121409235 is about 1038.9341999846.

The spelling of 1121409235 in words is "one billion, one hundred twenty-one million, four hundred nine thousand, two hundred thirty-five".