21023302202113 has 2 divisors, whose sum is σ = 21023302202114. Its totient is φ = 21023302202112.

The previous prime is 21023302202099. The next prime is 21023302202117. The reversal of 21023302202113 is 31120220332012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17427852910224 + 3595449291889 = 4174668^2 + 1896167^2 .

It is a cyclic number.

It is not a de Polignac number, because 21023302202113 - 2²⁵ = 21023268647681 is a prime.

It is not a weakly prime, because it can be changed into another prime (21023302202117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511651101056 + 10511651101057.

It is an arithmetic number, because the mean of its divisors is an integer number (10511651101057).

Almost surely, 2^{21023302202113} is an apocalyptic number.

It is an amenable number.

21023302202113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023302202113 is an equidigital number, since it uses as much as digits as its factorization.

21023302202113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21023302202113 its reverse (31120220332012), we get a palindrome (52143522534125).

The spelling of 21023302202113 in words is "twenty-one trillion, twenty-three billion, three hundred two million, two hundred two thousand, one hundred thirteen".