21130223223313 has 2 divisors, whose sum is σ = 21130223223314. Its totient is φ = 21130223223312.

The previous prime is 21130223223283. The next prime is 21130223223323. The reversal of 21130223223313 is 31332232203112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14627962921104 + 6502260302209 = 3824652^2 + 2549953^2 .

It is a cyclic number.

It is not a de Polignac number, because 21130223223313 - 2³⁷ = 20992784269841 is a prime.

It is not a weakly prime, because it can be changed into another prime (21130223223323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565111611656 + 10565111611657.

It is an arithmetic number, because the mean of its divisors is an integer number (10565111611657).

Almost surely, 2^{21130223223313} is an apocalyptic number.

It is an amenable number.

21130223223313 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130223223313 is an equidigital number, since it uses as much as digits as its factorization.

21130223223313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21130223223313 its reverse (31332232203112), we get a palindrome (52462455426425).

It can be divided in two parts, 2113022 and 3223313, that added together give a palindrome (5336335).

The spelling of 21130223223313 in words is "twenty-one trillion, one hundred thirty billion, two hundred twenty-three million, two hundred twenty-three thousand, three hundred thirteen".