1121123132309 has 4 divisors (see below), whose sum is σ = 1121264393004. Its totient is φ = 1120981871616.

The previous prime is 1121123132287. The next prime is 1121123132317. The reversal of 1121123132309 is 9032313211211.

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 615997371025 + 505125761284 = 784855^2 + 710722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121123132309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121123132329) 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, 70618442 + ... + 70634315.

It is an arithmetic number, because the mean of its divisors is an integer number (280316098251).

Almost surely, 2^{1121123132309} is an apocalyptic number.

It is an amenable number.

1121123132309 is a deficient number, since it is larger than the sum of its proper divisors (141260695).

1121123132309 is an equidigital number, since it uses as much as digits as its factorization.

1121123132309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141260694.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 1121123132309 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-three million, one hundred thirty-two thousand, three hundred nine".