1121141661 has 4 divisors (see below), whose sum is σ = 1494855552. Its totient is φ = 747427772.

The previous prime is 1121141611. The next prime is 1121141663. The reversal of 1121141661 is 1661411211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121141661 - 2⁷ = 1121141533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121141663) 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, 186856941 + ... + 186856946.

It is an arithmetic number, because the mean of its divisors is an integer number (373713888).

Almost surely, 2^1121141661 is an apocalyptic number.

It is an amenable number.

1121141661 is a deficient number, since it is larger than the sum of its proper divisors (373713891).

1121141661 is an equidigital number, since it uses as much as digits as its factorization.

1121141661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373713890.

The product of its digits is 288, while the sum is 24.

The square root of 1121141661 is about 33483.4535405176. The cubic root of 1121141661 is about 1038.8515617339.

Adding to 1121141661 its reverse (1661411211), we get a palindrome (2782552872).

The spelling of 1121141661 in words is "one billion, one hundred twenty-one million, one hundred forty-one thousand, six hundred sixty-one".