121121003 has 2 divisors, whose sum is σ = 121121004. Its totient is φ = 121121002.

The previous prime is 121120969. The next prime is 121121083. The reversal of 121121003 is 300121121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121121003 - 2²⁰ = 120072427 is a prime.

It is not a weakly prime, because it can be changed into another prime (121121083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560501 + 60560502.

It is an arithmetic number, because the mean of its divisors is an integer number (60560502).

Almost surely, 2^121121003 is an apocalyptic number.

121121003 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121003 is an equidigital number, since it uses as much as digits as its factorization.

121121003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 121121003 is about 11005.4987619826. The cubic root of 121121003 is about 494.7735630652.

Adding to 121121003 its reverse (300121121), we get a palindrome (421242124).

The spelling of 121121003 in words is "one hundred twenty-one million, one hundred twenty-one thousand, three".