13111212433203 has 24 divisors (see below), whose sum is σ = 19932972824128. Its totient is φ = 8610348452904.

The previous prime is 13111212433199. The next prime is 13111212433217. The reversal of 13111212433203 is 30233421211131.

13111212433203 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 1 + 21 + 2 + 433 + 203 = 666.

It is not a de Polignac number, because 13111212433203 - 2² = 13111212433199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111212433243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 402637501 + ... + 402670062.

Almost surely, 2^{13111212433203} is an apocalyptic number.

13111212433203 is a deficient number, since it is larger than the sum of its proper divisors (6821760390925).

13111212433203 is an frugal number, since it uses more digits than its factorization.

13111212433203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805307645 (or 805307633 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 13111212433203 its reverse (30233421211131), we get a palindrome (43344633644334).

The spelling of 13111212433203 in words is "thirteen trillion, one hundred eleven billion, two hundred twelve million, four hundred thirty-three thousand, two hundred three".