12229578278 has 8 divisors (see below), whose sum is σ = 18345125568. Its totient is φ = 6114536424.

The previous prime is 12229578259. The next prime is 12229578293. The reversal of 12229578278 is 87287592221.

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

It is a super-3 number, since 3×12229578278³ (a number of 31 digits) contains 333 as substring.

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, 58601 + ... + 167012.

It is an arithmetic number, because the mean of its divisors is an integer number (2293140696).

Almost surely, 2^12229578278 is an apocalyptic number.

12229578278 is a deficient number, since it is larger than the sum of its proper divisors (6115547290).

12229578278 is a wasteful number, since it uses less digits than its factorization.

12229578278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252718.

The product of its digits is 2257920, while the sum is 53.

The spelling of 12229578278 in words is "twelve billion, two hundred twenty-nine million, five hundred seventy-eight thousand, two hundred seventy-eight".