121104691 has 2 divisors, whose sum is σ = 121104692. Its totient is φ = 121104690.

The previous prime is 121104587. The next prime is 121104721. The reversal of 121104691 is 196401121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121104691 is a prime.

It is not a weakly prime, because it can be changed into another prime (121144691) 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 as a sum of consecutive naturals, namely, 60552345 + 60552346.

It is an arithmetic number, because the mean of its divisors is an integer number (60552346).

Almost surely, 2^121104691 is an apocalyptic number.

121104691 is a deficient number, since it is larger than the sum of its proper divisors (1).

121104691 is an equidigital number, since it uses as much as digits as its factorization.

121104691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 121104691 is about 11004.7576529427. The cubic root of 121104691 is about 494.7513508188.

The spelling of 121104691 in words is "one hundred twenty-one million, one hundred four thousand, six hundred ninety-one".