12220644435 has 16 divisors (see below), whose sum is σ = 19584736416. Its totient is φ = 6507108608.

The previous prime is 12220644431. The next prime is 12220644437. The reversal of 12220644435 is 53444602221.

It is a cyclic number.

It is not a de Polignac number, because 12220644435 - 2² = 12220644431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12220644396 and 12220644405.

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 15 ways as a sum of consecutive naturals, for example, 650964 + ... + 669473.

It is an arithmetic number, because the mean of its divisors is an integer number (1224046026).

Almost surely, 2^12220644435 is an apocalyptic number.

12220644435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12220644435 is a deficient number, since it is larger than the sum of its proper divisors (7364091981).

12220644435 is a wasteful number, since it uses less digits than its factorization.

12220644435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321062.

The product of its (nonzero) digits is 46080, while the sum is 33.

The spelling of 12220644435 in words is "twelve billion, two hundred twenty million, six hundred forty-four thousand, four hundred thirty-five".