13111121201 has 4 divisors (see below), whose sum is σ = 13233655152. Its totient is φ = 12988587252.

The previous prime is 13111121147. The next prime is 13111121239. The reversal of 13111121201 is 10212111131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10212111131 = 1789 ⋅5708279.

It is a cyclic number.

It is not a de Polignac number, because 13111121201 - 2⁶ = 13111121137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111121251) 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 in 3 ways as a sum of consecutive naturals, for example, 61266815 + ... + 61267028.

It is an arithmetic number, because the mean of its divisors is an integer number (3308413788).

Almost surely, 2^13111121201 is an apocalyptic number.

It is an amenable number.

13111121201 is a deficient number, since it is larger than the sum of its proper divisors (122533951).

13111121201 is a wasteful number, since it uses less digits than its factorization.

13111121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122533950.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 13111121201 its reverse (10212111131), we get a palindrome (23323232332).

The spelling of 13111121201 in words is "thirteen billion, one hundred eleven million, one hundred twenty-one thousand, two hundred one".