13203111101 has 2 divisors, whose sum is σ = 13203111102. Its totient is φ = 13203111100.

The previous prime is 13203111091. The next prime is 13203111113. The reversal of 13203111101 is 10111130231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12972982201 + 230128900 = 113899^2 + 15170^2 .

It is a cyclic number.

It is not a de Polignac number, because 13203111101 - 2¹⁰ = 13203110077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13203111161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6601555550 + 6601555551.

It is an arithmetic number, because the mean of its divisors is an integer number (6601555551).

Almost surely, 2^13203111101 is an apocalyptic number.

It is an amenable number.

13203111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

13203111101 is an equidigital number, since it uses as much as digits as its factorization.

13203111101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 13203111101 its reverse (10111130231), we get a palindrome (23314241332).

The spelling of 13203111101 in words is "thirteen billion, two hundred three million, one hundred eleven thousand, one hundred one".