12012511415161 has 16 divisors (see below), whose sum is σ = 12940732551168. Its totient is φ = 11118209533200.

The previous prime is 12012511415143. The next prime is 12012511415213. The reversal of 12012511415161 is 16151411521021.

It is a cyclic number.

It is not a de Polignac number, because 12012511415161 - 2⁹ = 12012511414649 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012511415141) 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, 4794970 + ... + 6856876.

It is an arithmetic number, because the mean of its divisors is an integer number (808795784448).

Almost surely, 2^{12012511415161} is an apocalyptic number.

It is an amenable number.

12012511415161 is a deficient number, since it is larger than the sum of its proper divisors (928221136007).

12012511415161 is a wasteful number, since it uses less digits than its factorization.

12012511415161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070132.

The product of its (nonzero) digits is 2400, while the sum is 31.

Adding to 12012511415161 its reverse (16151411521021), we get a palindrome (28163922936182).

The spelling of 12012511415161 in words is "twelve trillion, twelve billion, five hundred eleven million, four hundred fifteen thousand, one hundred sixty-one".