121021010003 has 2 divisors, whose sum is σ = 121021010004. Its totient is φ = 121021010002.

The previous prime is 121021009987. The next prime is 121021010009. The reversal of 121021010003 is 300010120121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121021010003 - 2⁴ = 121021009987 is a prime.

It is not a weakly prime, because it can be changed into another prime (121021010009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510505001 + 60510505002.

It is an arithmetic number, because the mean of its divisors is an integer number (60510505002).

Almost surely, 2^121021010003 is an apocalyptic number.

121021010003 is a deficient number, since it is larger than the sum of its proper divisors (1).

121021010003 is an equidigital number, since it uses as much as digits as its factorization.

121021010003 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.

Adding to 121021010003 its reverse (300010120121), we get a palindrome (421031130124).

The spelling of 121021010003 in words is "one hundred twenty-one billion, twenty-one million, ten thousand, three".