1121177123 has 4 divisors (see below), whose sum is σ = 1223102328. Its totient is φ = 1019251920.

The previous prime is 1121177087. The next prime is 1121177147. The reversal of 1121177123 is 3217711211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121177123 - 2¹⁸ = 1120914979 is a prime.

It is a super-2 number, since 2×1121177123² = 2514076282277114258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121177092 and 1121177101.

It is not an unprimeable number, because it can be changed into a prime (1121170123) 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, 50962586 + ... + 50962607.

It is an arithmetic number, because the mean of its divisors is an integer number (305775582).

Almost surely, 2^1121177123 is an apocalyptic number.

1121177123 is a deficient number, since it is larger than the sum of its proper divisors (101925205).

1121177123 is a wasteful number, since it uses less digits than its factorization.

1121177123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101925204.

The product of its digits is 588, while the sum is 26.

The square root of 1121177123 is about 33483.9830814675. The cubic root of 1121177123 is about 1038.8625146660.

Adding to 1121177123 its reverse (3217711211), we get a palindrome (4338888334).

The spelling of 1121177123 in words is "one billion, one hundred twenty-one million, one hundred seventy-seven thousand, one hundred twenty-three".