12045512213131 has 8 divisors (see below), whose sum is σ = 12548151228800. Its totient is φ = 11550002829120.

The previous prime is 12045512213123. The next prime is 12045512213183. The reversal of 12045512213131 is 13131221554021.

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 12045512213131 - 2³ = 12045512213123 is a prime.

It is a super-2 number, since 2×12045512213131² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12045512213093 and 12045512213102.

It is not an unprimeable number, because it can be changed into a prime (12045512213531) 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, 1782404466 + ... + 1782411223.

It is an arithmetic number, because the mean of its divisors is an integer number (1568518903600).

Almost surely, 2^{12045512213131} is an apocalyptic number.

12045512213131 is a deficient number, since it is larger than the sum of its proper divisors (502639015669).

12045512213131 is a wasteful number, since it uses less digits than its factorization.

12045512213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564815829.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 12045512213131 its reverse (13131221554021), we get a palindrome (25176733767152).

The spelling of 12045512213131 in words is "twelve trillion, forty-five billion, five hundred twelve million, two hundred thirteen thousand, one hundred thirty-one".