13212012111 has 16 divisors (see below), whose sum is σ = 18703102464. Its totient is φ = 8267289984.

The previous prime is 13212012103. The next prime is 13212012113. The reversal of 13212012111 is 11121021231.

It is not a de Polignac number, because 13212012111 - 2³ = 13212012103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212012113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334225 + ... + 371658.

It is an arithmetic number, because the mean of its divisors is an integer number (1168943904).

Almost surely, 2^13212012111 is an apocalyptic number.

13212012111 is a deficient number, since it is larger than the sum of its proper divisors (5491090353).

13212012111 is a wasteful number, since it uses less digits than its factorization.

13212012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706270.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 13212012111 its reverse (11121021231), we get a palindrome (24333033342).

The spelling of 13212012111 in words is "thirteen billion, two hundred twelve million, twelve thousand, one hundred eleven".