12161611134231 has 16 divisors (see below), whose sum is σ = 17723465445504. Its totient is φ = 7372365875424.

The previous prime is 12161611134227. The next prime is 12161611134263. The reversal of 12161611134231 is 13243111616121.

12161611134231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12161611134231 - 2² = 12161611134227 is a prime.

It is a super-2 number, since 2×12161611134231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12161611134192 and 12161611134201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161611134031) 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, 2327133081 + ... + 2327138306.

It is an arithmetic number, because the mean of its divisors is an integer number (1107716590344).

Almost surely, 2^{12161611134231} is an apocalyptic number.

12161611134231 is a deficient number, since it is larger than the sum of its proper divisors (5561854311273).

12161611134231 is a wasteful number, since it uses less digits than its factorization.

12161611134231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4654271470.

The product of its digits is 5184, while the sum is 33.

The spelling of 12161611134231 in words is "twelve trillion, one hundred sixty-one billion, six hundred eleven million, one hundred thirty-four thousand, two hundred thirty-one".