1121672217 has 8 divisors (see below), whose sum is σ = 1495718496. Its totient is φ = 747703712.

The previous prime is 1121672177. The next prime is 1121672261. The reversal of 1121672217 is 7122761211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121672217 - 2⁷ = 1121672089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121672267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41518 + ... + 62984.

It is an arithmetic number, because the mean of its divisors is an integer number (186964812).

Almost surely, 2^1121672217 is an apocalyptic number.

It is an amenable number.

1121672217 is a deficient number, since it is larger than the sum of its proper divisors (374046279).

1121672217 is a wasteful number, since it uses less digits than its factorization.

1121672217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38887.

The product of its digits is 2352, while the sum is 30.

The square root of 1121672217 is about 33491.3752628942. The cubic root of 1121672217 is about 1039.0154072223.

The spelling of 1121672217 in words is "one billion, one hundred twenty-one million, six hundred seventy-two thousand, two hundred seventeen".