1020372821003 has 2 divisors, whose sum is σ = 1020372821004. Its totient is φ = 1020372821002.

The previous prime is 1020372820979. The next prime is 1020372821063. The reversal of 1020372821003 is 3001282730201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020372821003 - 2³⁰ = 1019299079179 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1020372821063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510186410501 + 510186410502.

It is an arithmetic number, because the mean of its divisors is an integer number (510186410502).

Almost surely, 2^{1020372821003} is an apocalyptic number.

1020372821003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020372821003 is an equidigital number, since it uses as much as digits as its factorization.

1020372821003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 1020372821003 in words is "one trillion, twenty billion, three hundred seventy-two million, eight hundred twenty-one thousand, three".