1121884121 has 4 divisors (see below), whose sum is σ = 1125213492. Its totient is φ = 1118554752.

The previous prime is 1121884069. The next prime is 1121884187. The reversal of 1121884121 is 1214881211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 541074121 + 580810000 = 23261^2 + 24100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121884121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121884021) 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, 1664180 + ... + 1664853.

It is an arithmetic number, because the mean of its divisors is an integer number (281303373).

Almost surely, 2^1121884121 is an apocalyptic number.

It is an amenable number.

1121884121 is a deficient number, since it is larger than the sum of its proper divisors (3329371).

1121884121 is an equidigital number, since it uses as much as digits as its factorization.

1121884121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329370.

The product of its digits is 1024, while the sum is 29.

The square root of 1121884121 is about 33494.5386742376. The cubic root of 1121884121 is about 1039.0808326512.

The spelling of 1121884121 in words is "one billion, one hundred twenty-one million, eight hundred eighty-four thousand, one hundred twenty-one".