13203121123111 has 2 divisors, whose sum is σ = 13203121123112. Its totient is φ = 13203121123110.

The previous prime is 13203121123099. The next prime is 13203121123151. The reversal of 13203121123111 is 11132112130231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13203121123111 - 2¹³ = 13203121114919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13203121123151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6601560561555 + 6601560561556.

It is an arithmetic number, because the mean of its divisors is an integer number (6601560561556).

Almost surely, 2^{13203121123111} is an apocalyptic number.

13203121123111 is a deficient number, since it is larger than the sum of its proper divisors (1).

13203121123111 is an equidigital number, since it uses as much as digits as its factorization.

13203121123111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 13203121123111 its reverse (11132112130231), we get a palindrome (24335233253342).

The spelling of 13203121123111 in words is "thirteen trillion, two hundred three billion, one hundred twenty-one million, one hundred twenty-three thousand, one hundred eleven".