121318003 has 2 divisors, whose sum is σ = 121318004. Its totient is φ = 121318002.

The previous prime is 121317979. The next prime is 121318013. The reversal of 121318003 is 300813121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121318003 - 2²¹ = 119220851 is a prime.

It is not a weakly prime, because it can be changed into another prime (121318013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60659001 + 60659002.

It is an arithmetic number, because the mean of its divisors is an integer number (60659002).

Almost surely, 2^121318003 is an apocalyptic number.

121318003 is a deficient number, since it is larger than the sum of its proper divisors (1).

121318003 is an equidigital number, since it uses as much as digits as its factorization.

121318003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 121318003 is about 11014.4451971037. The cubic root of 121318003 is about 495.0416629898.

The spelling of 121318003 in words is "one hundred twenty-one million, three hundred eighteen thousand, three".