1121327165 has 16 divisors (see below), whose sum is σ = 1604683008. Its totient is φ = 735478656.

The previous prime is 1121327159. The next prime is 1121327173. The reversal of 1121327165 is 5617231211.

It is a cyclic number.

It is not a de Polignac number, because 1121327165 - 2⁸ = 1121326909 is a prime.

It is a super-2 number, since 2×1121327165² = 2514749221933874450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695672 + ... + 697281.

It is an arithmetic number, because the mean of its divisors is an integer number (100292688).

Almost surely, 2^1121327165 is an apocalyptic number.

It is an amenable number.

1121327165 is a deficient number, since it is larger than the sum of its proper divisors (483355843).

1121327165 is a wasteful number, since it uses less digits than its factorization.

1121327165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392988.

The product of its digits is 2520, while the sum is 29.

The square root of 1121327165 is about 33486.2235105722. The cubic root of 1121327165 is about 1038.9088546699.

Adding to 1121327165 its reverse (5617231211), we get a palindrome (6738558376).

The spelling of 1121327165 in words is "one billion, one hundred twenty-one million, three hundred twenty-seven thousand, one hundred sixty-five".