12121234432342 has 32 divisors (see below), whose sum is σ = 20838164843520. Its totient is φ = 5180093674560.

The previous prime is 12121234432303. The next prime is 12121234432343. The reversal of 12121234432342 is 24323443212121.

12121234432342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12121234432298 and 12121234432307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121234432343) 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, 27195042 + ... + 27637162.

It is an arithmetic number, because the mean of its divisors is an integer number (651192651360).

Almost surely, 2^{12121234432342} is an apocalyptic number.

12121234432342 is a deficient number, since it is larger than the sum of its proper divisors (8716930411178).

12121234432342 is a wasteful number, since it uses less digits than its factorization.

12121234432342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447676.

The product of its digits is 55296, while the sum is 34.

Adding to 12121234432342 its reverse (24323443212121), we get a palindrome (36444677644463).

It can be divided in two parts, 1212123 and 4432342, that added together give a palindrome (5644465).

The spelling of 12121234432342 in words is "twelve trillion, one hundred twenty-one billion, two hundred thirty-four million, four hundred thirty-two thousand, three hundred forty-two".