12801222777 has 8 divisors (see below), whose sum is σ = 19506625216. Its totient is φ = 7314984432.

The previous prime is 12801222761. The next prime is 12801222781. The reversal of 12801222777 is 77722210821.

12801222777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12801222777 - 2⁴ = 12801222761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12801222737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304790998 + ... + 304791039.

It is an arithmetic number, because the mean of its divisors is an integer number (2438328152).

Almost surely, 2^12801222777 is an apocalyptic number.

It is an amenable number.

12801222777 is a deficient number, since it is larger than the sum of its proper divisors (6705402439).

12801222777 is an equidigital number, since it uses as much as digits as its factorization.

12801222777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609582047.

The product of its (nonzero) digits is 43904, while the sum is 39.

The spelling of 12801222777 in words is "twelve billion, eight hundred one million, two hundred twenty-two thousand, seven hundred seventy-seven".