11154434111212 has 24 divisors (see below), whose sum is σ = 22335458100480. Its totient is φ = 4774773930960.

The previous prime is 11154434111207. The next prime is 11154434111213. The reversal of 11154434111212 is 21211143445111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11154434111213) 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 7 ways as a sum of consecutive naturals, for example, 237385714 + ... + 237432697.

It is an arithmetic number, because the mean of its divisors is an integer number (930644087520).

Almost surely, 2^{11154434111212} is an apocalyptic number.

It is an amenable number.

11154434111212 is an abundant number, since it is smaller than the sum of its proper divisors (11181023989268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11154434111212 is a wasteful number, since it uses less digits than its factorization.

11154434111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474819261 (or 474819259 counting only the distinct ones).

The product of its digits is 3840, while the sum is 31.

Adding to 11154434111212 its reverse (21211143445111), we get a palindrome (32365577556323).

The spelling of 11154434111212 in words is "eleven trillion, one hundred fifty-four billion, four hundred thirty-four million, one hundred eleven thousand, two hundred twelve".