21130223203301 has 2 divisors, whose sum is σ = 21130223203302. Its totient is φ = 21130223203300.

The previous prime is 21130223203291. The next prime is 21130223203321. The reversal of 21130223203301 is 10330232203112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20264411563201 + 865811640100 = 4501601^2 + 930490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21130223203301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21130223203321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565111601650 + 10565111601651.

It is an arithmetic number, because the mean of its divisors is an integer number (10565111601651).

Almost surely, 2^{21130223203301} is an apocalyptic number.

It is an amenable number.

21130223203301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130223203301 is an equidigital number, since it uses as much as digits as its factorization.

21130223203301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21130223203301 its reverse (10330232203112), we get a palindrome (31460455406413).

The spelling of 21130223203301 in words is "twenty-one trillion, one hundred thirty billion, two hundred twenty-three million, two hundred three thousand, three hundred one".