21302201113 has 2 divisors, whose sum is σ = 21302201114. Its totient is φ = 21302201112.

The previous prime is 21302201069. The next prime is 21302201117. The reversal of 21302201113 is 31110220312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16965583504 + 4336617609 = 130252^2 + 65853^2 .

It is a cyclic number.

It is not a de Polignac number, because 21302201113 - 2²⁵ = 21268646681 is a prime.

It is not a weakly prime, because it can be changed into another prime (21302201117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651100556 + 10651100557.

It is an arithmetic number, because the mean of its divisors is an integer number (10651100557).

Almost surely, 2^21302201113 is an apocalyptic number.

It is an amenable number.

21302201113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21302201113 is an equidigital number, since it uses as much as digits as its factorization.

21302201113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21302201113 its reverse (31110220312), we get a palindrome (52412421425).

The spelling of 21302201113 in words is "twenty-one billion, three hundred two million, two hundred one thousand, one hundred thirteen".