1121154371 has 4 divisors (see below), whose sum is σ = 1125291744. Its totient is φ = 1117017000.

The previous prime is 1121154323. The next prime is 1121154373. The reversal of 1121154371 is 1734511211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121154371 is a prime.

It is a super-2 number, since 2×1121154371² = 2513974247224811282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121154371.

It is not an unprimeable number, because it can be changed into a prime (1121154373) 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, 2068280 + ... + 2068821.

It is an arithmetic number, because the mean of its divisors is an integer number (281322936).

Almost surely, 2^1121154371 is an apocalyptic number.

1121154371 is a deficient number, since it is larger than the sum of its proper divisors (4137373).

1121154371 is an equidigital number, since it uses as much as digits as its factorization.

1121154371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137372.

The product of its digits is 840, while the sum is 26.

The square root of 1121154371 is about 33483.6433352167. The cubic root of 1121154371 is about 1038.8554874208.

Adding to 1121154371 its reverse (1734511211), we get a palindrome (2855665582).

The spelling of 1121154371 in words is "one billion, one hundred twenty-one million, one hundred fifty-four thousand, three hundred seventy-one".