21034124021003 has 2 divisors, whose sum is σ = 21034124021004. Its totient is φ = 21034124021002.

The previous prime is 21034124020961. The next prime is 21034124021011. The reversal of 21034124021003 is 30012042143012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21034124021003 - 2¹⁸ = 21034123758859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21034124021003.

It is not a weakly prime, because it can be changed into another prime (21034124021023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517062010501 + 10517062010502.

It is an arithmetic number, because the mean of its divisors is an integer number (10517062010502).

Almost surely, 2^{21034124021003} is an apocalyptic number.

21034124021003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21034124021003 is an equidigital number, since it uses as much as digits as its factorization.

21034124021003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21034124021003 its reverse (30012042143012), we get a palindrome (51046166164015).

The spelling of 21034124021003 in words is "twenty-one trillion, thirty-four billion, one hundred twenty-four million, twenty-one thousand, three".