21000302023003 has 2 divisors, whose sum is σ = 21000302023004. Its totient is φ = 21000302023002.

The previous prime is 21000302022977. The next prime is 21000302023013. The reversal of 21000302023003 is 30032020300012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21000302023003 - 2²¹ = 21000299925851 is a prime.

It is a super-2 number, since 2×21000302023003² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21000302023013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500151011501 + 10500151011502.

It is an arithmetic number, because the mean of its divisors is an integer number (10500151011502).

Almost surely, 2^{21000302023003} is an apocalyptic number.

21000302023003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000302023003 is an equidigital number, since it uses as much as digits as its factorization.

21000302023003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 21000302023003 its reverse (30032020300012), we get a palindrome (51032322323015).

The spelling of 21000302023003 in words is "twenty-one trillion, three hundred two million, twenty-three thousand, three".