12220644434 has 16 divisors (see below), whose sum is σ = 18372458880. Its totient is φ = 6096507120.

The previous prime is 12220644431. The next prime is 12220644437. The reversal of 12220644434 is 43444602221.

It is an interprime number because it is at equal distance from previous prime (12220644431) and next prime (12220644437).

It is a self number, because there is not a number n which added to its sum of digits gives 12220644434.

It is not an unprimeable number, because it can be changed into a prime (12220644431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2211527 + ... + 2217045.

It is an arithmetic number, because the mean of its divisors is an integer number (1148278680).

Almost surely, 2^12220644434 is an apocalyptic number.

12220644434 is a deficient number, since it is larger than the sum of its proper divisors (6151814446).

12220644434 is a wasteful number, since it uses less digits than its factorization.

12220644434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7825.

The product of its (nonzero) digits is 36864, while the sum is 32.

The spelling of 12220644434 in words is "twelve billion, two hundred twenty million, six hundred forty-four thousand, four hundred thirty-four".