13031212101111 has 24 divisors (see below), whose sum is σ = 19430498954880. Its totient is φ = 8407039795200.

The previous prime is 13031212101041. The next prime is 13031212101119. The reversal of 13031212101111 is 11110121213031.

13031212101111 is a `hidden beast` number, since 1 + 30 + 312 + 1 + 210 + 1 + 111 = 666.

It is not a de Polignac number, because 13031212101111 - 2⁷ = 13031212100983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031212101119) 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, 12117655 + ... + 13149143.

It is an arithmetic number, because the mean of its divisors is an integer number (809604123120).

Almost surely, 2^{13031212101111} is an apocalyptic number.

13031212101111 is a deficient number, since it is larger than the sum of its proper divisors (6399286853769).

13031212101111 is a wasteful number, since it uses less digits than its factorization.

13031212101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076807 (or 1076804 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 13031212101111 its reverse (11110121213031), we get a palindrome (24141333314142).

The spelling of 13031212101111 in words is "thirteen trillion, thirty-one billion, two hundred twelve million, one hundred one thousand, one hundred eleven".