12219879236 has 6 divisors (see below), whose sum is σ = 21384788670. Its totient is φ = 6109939616.

The previous prime is 12219879233. The next prime is 12219879283. The reversal of 12219879236 is 63297891221.

It can be written as a sum of positive squares in only one way, i.e., 12073614400 + 146264836 = 109880^2 + 12094^2 .

It is not an unprimeable number, because it can be changed into a prime (12219879233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527484901 + ... + 1527484908.

It is an arithmetic number, because the mean of its divisors is an integer number (3564131445).

Almost surely, 2^12219879236 is an apocalyptic number.

It is an amenable number.

12219879236 is a deficient number, since it is larger than the sum of its proper divisors (9164909434).

12219879236 is a wasteful number, since it uses less digits than its factorization.

12219879236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054969813 (or 3054969811 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The spelling of 12219879236 in words is "twelve billion, two hundred nineteen million, eight hundred seventy-nine thousand, two hundred thirty-six".