21030000011023 has 2 divisors, whose sum is σ = 21030000011024. Its totient is φ = 21030000011022.

The previous prime is 21030000010933. The next prime is 21030000011029. The reversal of 21030000011023 is 32011000003012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21030000011023 - 2¹³ = 21030000002831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21030000010994 and 21030000011012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21030000011029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515000005511 + 10515000005512.

It is an arithmetic number, because the mean of its divisors is an integer number (10515000005512).

Almost surely, 2^{21030000011023} is an apocalyptic number.

21030000011023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030000011023 is an equidigital number, since it uses as much as digits as its factorization.

21030000011023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21030000011023 its reverse (32011000003012), we get a palindrome (53041000014035).

The spelling of 21030000011023 in words is "twenty-one trillion, thirty billion, eleven thousand, twenty-three".