12219312940 has 12 divisors (see below), whose sum is σ = 25660557216. Its totient is φ = 4887725168.

The previous prime is 12219312877. The next prime is 12219312947. The reversal of 12219312940 is 4921391221.

It is a junction number, because it is equal to n+sod(n) for n = 12219312896 and 12219312905.

It is not an unprimeable number, because it can be changed into a prime (12219312947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305482804 + ... + 305482843.

It is an arithmetic number, because the mean of its divisors is an integer number (2138379768).

Almost surely, 2^12219312940 is an apocalyptic number.

12219312940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12219312940 is an abundant number, since it is smaller than the sum of its proper divisors (13441244276).

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

12219312940 is a wasteful number, since it uses less digits than its factorization.

12219312940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610965656 (or 610965654 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 12219312940 in words is "twelve billion, two hundred nineteen million, three hundred twelve thousand, nine hundred forty".