1021020030203 has 2 divisors, whose sum is σ = 1021020030204. Its totient is φ = 1021020030202.

The previous prime is 1021020030197. The next prime is 1021020030223. The reversal of 1021020030203 is 3020300201201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021020030203 - 2¹² = 1021020026107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021020030223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510510015101 + 510510015102.

It is an arithmetic number, because the mean of its divisors is an integer number (510510015102).

Almost surely, 2^{1021020030203} is an apocalyptic number.

1021020030203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021020030203 is an equidigital number, since it uses as much as digits as its factorization.

1021020030203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 1021020030203 its reverse (3020300201201), we get a palindrome (4041320231404).

The spelling of 1021020030203 in words is "one trillion, twenty-one billion, twenty million, thirty thousand, two hundred three".