1172121367 has 4 divisors (see below), whose sum is σ = 1185291360. Its totient is φ = 1158951376.

The previous prime is 1172121359. The next prime is 1172121371. The reversal of 1172121367 is 7631212711.

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 1172121367 - 2³ = 1172121359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172151367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6584863 + ... + 6585040.

It is an arithmetic number, because the mean of its divisors is an integer number (296322840).

Almost surely, 2^1172121367 is an apocalyptic number.

1172121367 is a deficient number, since it is larger than the sum of its proper divisors (13169993).

1172121367 is an equidigital number, since it uses as much as digits as its factorization.

1172121367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13169992.

The product of its digits is 3528, while the sum is 31.

The square root of 1172121367 is about 34236.2580753213. The cubic root of 1172121367 is about 1054.3647087527.

The spelling of 1172121367 in words is "one billion, one hundred seventy-two million, one hundred twenty-one thousand, three hundred sixty-seven".