12722155256 has 16 divisors (see below), whose sum is σ = 23860583640. Its totient is φ = 6359332960.

The previous prime is 12722155249. The next prime is 12722155297. The reversal of 12722155256 is 65255122721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186830 + ... + 245661.

Almost surely, 2^12722155256 is an apocalyptic number.

It is an amenable number.

12722155256 is a deficient number, since it is larger than the sum of its proper divisors (11138428384).

12722155256 is a wasteful number, since it uses less digits than its factorization.

12722155256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436174 (or 436170 counting only the distinct ones).

The product of its digits is 84000, while the sum is 38.

Adding to 12722155256 its reverse (65255122721), we get a palindrome (77977277977).

The spelling of 12722155256 in words is "twelve billion, seven hundred twenty-two million, one hundred fifty-five thousand, two hundred fifty-six".