121606747 has 2 divisors, whose sum is σ = 121606748. Its totient is φ = 121606746.

The previous prime is 121606699. The next prime is 121606777. The reversal of 121606747 is 747606121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121606747 - 2⁷ = 121606619 is a prime.

It is not a weakly prime, because it can be changed into another prime (121606777) 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, 60803373 + 60803374.

It is an arithmetic number, because the mean of its divisors is an integer number (60803374).

Almost surely, 2^121606747 is an apocalyptic number.

121606747 is a deficient number, since it is larger than the sum of its proper divisors (1).

121606747 is an equidigital number, since it uses as much as digits as its factorization.

121606747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 121606747 is about 11027.5449216949. The cubic root of 121606747 is about 495.4340945993.

The spelling of 121606747 in words is "one hundred twenty-one million, six hundred six thousand, seven hundred forty-seven".