121600447 has 2 divisors, whose sum is σ = 121600448. Its totient is φ = 121600446.

The previous prime is 121600411. The next prime is 121600459. The reversal of 121600447 is 744006121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121600447 - 2⁷ = 121600319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121600487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60800223 + 60800224.

It is an arithmetic number, because the mean of its divisors is an integer number (60800224).

Almost surely, 2^121600447 is an apocalyptic number.

121600447 is a deficient number, since it is larger than the sum of its proper divisors (1).

121600447 is an equidigital number, since it uses as much as digits as its factorization.

121600447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 121600447 is about 11027.2592696463. The cubic root of 121600447 is about 495.4255389098.

Adding to 121600447 its reverse (744006121), we get a palindrome (865606568).

The spelling of 121600447 in words is "one hundred twenty-one million, six hundred thousand, four hundred forty-seven".