1122512379 has 4 divisors (see below), whose sum is σ = 1496683176. Its totient is φ = 748341584.

The previous prime is 1122512357. The next prime is 1122512383. The reversal of 1122512379 is 9732152211.

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 1122512379 - 2¹⁷ = 1122381307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1122512779) 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, 187085394 + ... + 187085399.

It is an arithmetic number, because the mean of its divisors is an integer number (374170794).

Almost surely, 2^1122512379 is an apocalyptic number.

1122512379 is a deficient number, since it is larger than the sum of its proper divisors (374170797).

1122512379 is an equidigital number, since it uses as much as digits as its factorization.

1122512379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374170796.

The product of its digits is 7560, while the sum is 33.

The square root of 1122512379 is about 33503.9158756107. The cubic root of 1122512379 is about 1039.2747591042.

The spelling of 1122512379 in words is "one billion, one hundred twenty-two million, five hundred twelve thousand, three hundred seventy-nine".