121975603 has 2 divisors, whose sum is σ = 121975604. Its totient is φ = 121975602.

The previous prime is 121975591. The next prime is 121975619. The reversal of 121975603 is 306579121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121975603 - 2¹³ = 121967411 is a prime.

It is not a weakly prime, because it can be changed into another prime (121975673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60987801 + 60987802.

It is an arithmetic number, because the mean of its divisors is an integer number (60987802).

Almost surely, 2^121975603 is an apocalyptic number.

121975603 is a deficient number, since it is larger than the sum of its proper divisors (1).

121975603 is an equidigital number, since it uses as much as digits as its factorization.

121975603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 121975603 is about 11044.2565616704. The cubic root of 121975603 is about 495.9345037411.

The spelling of 121975603 in words is "one hundred twenty-one million, nine hundred seventy-five thousand, six hundred three".