21100202130023 has 2 divisors, whose sum is σ = 21100202130024. Its totient is φ = 21100202130022.

The previous prime is 21100202130019. The next prime is 21100202130089. The reversal of 21100202130023 is 32003120200112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21100202130023 - 2² = 21100202130019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21100202129983 and 21100202130010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21100202130223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550101065011 + 10550101065012.

It is an arithmetic number, because the mean of its divisors is an integer number (10550101065012).

Almost surely, 2^{21100202130023} is an apocalyptic number.

21100202130023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100202130023 is an equidigital number, since it uses as much as digits as its factorization.

21100202130023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21100202130023 its reverse (32003120200112), we get a palindrome (53103322330135).

The spelling of 21100202130023 in words is "twenty-one trillion, one hundred billion, two hundred two million, one hundred thirty thousand, twenty-three".