12111216085453 has 8 divisors (see below), whose sum is σ = 12718286183808. Its totient is φ = 11510853944304.

The previous prime is 12111216085417. The next prime is 12111216085457. The reversal of 12111216085453 is 35458061211121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12111216085453 - 2³³ = 12102626150861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111216085457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1676985601 + ... + 1676992822.

It is an arithmetic number, because the mean of its divisors is an integer number (1589785772976).

Almost surely, 2^{12111216085453} is an apocalyptic number.

It is an amenable number.

12111216085453 is a deficient number, since it is larger than the sum of its proper divisors (607070098355).

12111216085453 is a wasteful number, since it uses less digits than its factorization.

12111216085453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353978603.

The product of its (nonzero) digits is 57600, while the sum is 40.

Adding to 12111216085453 its reverse (35458061211121), we get a palindrome (47569277296574).

The spelling of 12111216085453 in words is "twelve trillion, one hundred eleven billion, two hundred sixteen million, eighty-five thousand, four hundred fifty-three".