12776896221 has 8 divisors (see below), whose sum is σ = 17776551360. Its totient is φ = 8147585952.

The previous prime is 12776896213. The next prime is 12776896243. The reversal of 12776896221 is 12269867721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12776896221 - 2³ = 12776896213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12776896201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92586136 + ... + 92586273.

It is an arithmetic number, because the mean of its divisors is an integer number (2222068920).

Almost surely, 2^12776896221 is an apocalyptic number.

It is an amenable number.

12776896221 is a deficient number, since it is larger than the sum of its proper divisors (4999655139).

12776896221 is a wasteful number, since it uses less digits than its factorization.

12776896221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185172435.

The product of its digits is 1016064, while the sum is 51.

The spelling of 12776896221 in words is "twelve billion, seven hundred seventy-six million, eight hundred ninety-six thousand, two hundred twenty-one".