13121243042132 has 24 divisors (see below), whose sum is σ = 22996242410400. Its totient is φ = 6550895251296.

The previous prime is 13121243042129. The next prime is 13121243042209. The reversal of 13121243042132 is 23124034212131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13121243042095 and 13121243042104.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6420719 + ... + 8213897.

It is an arithmetic number, because the mean of its divisors is an integer number (958176767100).

Almost surely, 2^{13121243042132} is an apocalyptic number.

It is an amenable number.

13121243042132 is a deficient number, since it is larger than the sum of its proper divisors (9874999368268).

13121243042132 is a wasteful number, since it uses less digits than its factorization.

13121243042132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795895 (or 1795893 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 13121243042132 its reverse (23124034212131), we get a palindrome (36245277254263).

The spelling of 13121243042132 in words is "thirteen trillion, one hundred twenty-one billion, two hundred forty-three million, forty-two thousand, one hundred thirty-two".