12219127944 has 64 divisors (see below), whose sum is σ = 32357413440. Its totient is φ = 3831951360.

The previous prime is 12219127939. The next prime is 12219127957. The reversal of 12219127944 is 44972191221.

It is a junction number, because it is equal to n+sod(n) for n = 12219127896 and 12219127905.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530507 + ... + 1538469.

It is an arithmetic number, because the mean of its divisors is an integer number (505584585).

Almost surely, 2^12219127944 is an apocalyptic number.

It is an amenable number.

12219127944 is an abundant number, since it is smaller than the sum of its proper divisors (20138285496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12219127944 is a wasteful number, since it uses less digits than its factorization.

12219127944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11750 (or 11746 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The spelling of 12219127944 in words is "twelve billion, two hundred nineteen million, one hundred twenty-seven thousand, nine hundred forty-four".