23203100330021 has 2 divisors, whose sum is σ = 23203100330022. Its totient is φ = 23203100330020.

The previous prime is 23203100329993. The next prime is 23203100330027. The reversal of 23203100330021 is 12003300130232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16742098907521 + 6461001422500 = 4091711^2 + 2541850^2 .

It is a cyclic number.

It is not a de Polignac number, because 23203100330021 - 2²² = 23203096135717 is a prime.

It is a super-2 number, since 2×23203100330021² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23203100329975 and 23203100330002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23203100330027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11601550165010 + 11601550165011.

It is an arithmetic number, because the mean of its divisors is an integer number (11601550165011).

Almost surely, 2^{23203100330021} is an apocalyptic number.

It is an amenable number.

23203100330021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23203100330021 is an equidigital number, since it uses as much as digits as its factorization.

23203100330021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23203100330021 its reverse (12003300130232), we get a palindrome (35206400460253).

The spelling of 23203100330021 in words is "twenty-three trillion, two hundred three billion, one hundred million, three hundred thirty thousand, twenty-one".