1211104379 has 2 divisors, whose sum is σ = 1211104380. Its totient is φ = 1211104378.

The previous prime is 1211104369. The next prime is 1211104457. The reversal of 1211104379 is 9734011121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211104379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211104369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605552189 + 605552190.

It is an arithmetic number, because the mean of its divisors is an integer number (605552190).

Almost surely, 2^1211104379 is an apocalyptic number.

1211104379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211104379 is an equidigital number, since it uses as much as digits as its factorization.

1211104379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1211104379 is about 34800.9249733394. The cubic root of 1211104379 is about 1065.9263334277.

The spelling of 1211104379 in words is "one billion, two hundred eleven million, one hundred four thousand, three hundred seventy-nine".