13121200132042 has 4 divisors (see below), whose sum is σ = 19681800198066. Its totient is φ = 6560600066020.

The previous prime is 13121200132021. The next prime is 13121200132087. The reversal of 13121200132042 is 24023100212131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12495030198561 + 626169933481 = 3534831^2 + 791309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280300033009 + ... + 3280300033012.

Almost surely, 2^{13121200132042} is an apocalyptic number.

13121200132042 is a deficient number, since it is larger than the sum of its proper divisors (6560600066024).

13121200132042 is an equidigital number, since it uses as much as digits as its factorization.

13121200132042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6560600066023.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13121200132042 its reverse (24023100212131), we get a palindrome (37144300344173).

The spelling of 13121200132042 in words is "thirteen trillion, one hundred twenty-one billion, two hundred million, one hundred thirty-two thousand, forty-two".