1121380969 has 4 divisors (see below), whose sum is σ = 1180401040. Its totient is φ = 1062360900.

The previous prime is 1121380951. The next prime is 1121380987. The reversal of 1121380969 is 9690831211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9690831211 = 75323 ⋅128657.

It is an interprime number because it is at equal distance from previous prime (1121380951) and next prime (1121380987).

It is a cyclic number.

It is not a de Polignac number, because 1121380969 - 2⁵ = 1121380937 is a prime.

It is a super-2 number, since 2×1121380969² = 2514990555270757922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121380919) 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, 29510007 + ... + 29510044.

It is an arithmetic number, because the mean of its divisors is an integer number (295100260).

Almost surely, 2^1121380969 is an apocalyptic number.

1121380969 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1121380969 is a deficient number, since it is larger than the sum of its proper divisors (59020071).

1121380969 is an equidigital number, since it uses as much as digits as its factorization.

1121380969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59020070.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1121380969 is about 33487.0268760904. The cubic root of 1121380969 is about 1038.9254708606.

The spelling of 1121380969 in words is "one billion, one hundred twenty-one million, three hundred eighty thousand, nine hundred sixty-nine".