12613121031106 has 4 divisors (see below), whose sum is σ = 18919681546662. Its totient is φ = 6306560515552.

The previous prime is 12613121031103. The next prime is 12613121031109. The reversal of 12613121031106 is 60113012131621.

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

It is an interprime number because it is at equal distance from previous prime (12613121031103) and next prime (12613121031109).

It can be written as a sum of positive squares in only one way, i.e., 12585997905625 + 27123125481 = 3547675^2 + 164691^2 .

It is not an unprimeable number, because it can be changed into a prime (12613121031103) by changing a digit.

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 as a sum of consecutive naturals, namely, 3153280257775 + ... + 3153280257778.

Almost surely, 2^{12613121031106} is an apocalyptic number.

12613121031106 is a deficient number, since it is larger than the sum of its proper divisors (6306560515556).

12613121031106 is an equidigital number, since it uses as much as digits as its factorization.

12613121031106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6306560515555.

The product of its (nonzero) digits is 1296, while the sum is 28.

Adding to 12613121031106 its reverse (60113012131621), we get a palindrome (72726133162727).

The spelling of 12613121031106 in words is "twelve trillion, six hundred thirteen billion, one hundred twenty-one million, thirty-one thousand, one hundred six".