12870120061 has 4 divisors (see below), whose sum is σ = 12873326400. Its totient is φ = 12866913724.

The previous prime is 12870120023. The next prime is 12870120073. The reversal of 12870120061 is 16002107821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12870120061 - 2³¹ = 10722636413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870120661) 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 in 3 ways as a sum of consecutive naturals, for example, 1597141 + ... + 1605178.

It is an arithmetic number, because the mean of its divisors is an integer number (3218331600).

Almost surely, 2^12870120061 is an apocalyptic number.

It is an amenable number.

12870120061 is a deficient number, since it is larger than the sum of its proper divisors (3206339).

12870120061 is an equidigital number, since it uses as much as digits as its factorization.

12870120061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206338.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 12870120061 its reverse (16002107821), we get a palindrome (28872227882).

The spelling of 12870120061 in words is "twelve billion, eight hundred seventy million, one hundred twenty thousand, sixty-one".