12012537815422 has 8 divisors (see below), whose sum is σ = 18018872877096. Its totient is φ = 6006246856392.

The previous prime is 12012537815407. The next prime is 12012537815423. The reversal of 12012537815422 is 22451873521021.

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

It is a super-2 number, since 2×12012537815422² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012537815423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10336093 + ... + 11439400.

It is an arithmetic number, because the mean of its divisors is an integer number (2252359109637).

Almost surely, 2^{12012537815422} is an apocalyptic number.

12012537815422 is a deficient number, since it is larger than the sum of its proper divisors (6006335061674).

12012537815422 is a wasteful number, since it uses less digits than its factorization.

12012537815422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22051322.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 12012537815422 in words is "twelve trillion, twelve billion, five hundred thirty-seven million, eight hundred fifteen thousand, four hundred twenty-two".