1020201002003 has 2 divisors, whose sum is σ = 1020201002004. Its totient is φ = 1020201002002.

The previous prime is 1020201001951. The next prime is 1020201002113. The reversal of 1020201002003 is 3002001020201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020201002003 - 2²⁸ = 1019932566547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020201002503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510100501001 + 510100501002.

It is an arithmetic number, because the mean of its divisors is an integer number (510100501002).

Almost surely, 2^{1020201002003} is an apocalyptic number.

1020201002003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020201002003 is an equidigital number, since it uses as much as digits as its factorization.

1020201002003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 1020201002003 its reverse (3002001020201), we get a palindrome (4022202022204).

The spelling of 1020201002003 in words is "one trillion, twenty billion, two hundred one million, two thousand, three".