12220302320 has 20 divisors (see below), whose sum is σ = 28412203080. Its totient is φ = 4888120896.

The previous prime is 12220302307. The next prime is 12220302359. The reversal of 12220302320 is 2320302221.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76376810 + ... + 76376969.

It is an arithmetic number, because the mean of its divisors is an integer number (1420610154).

Almost surely, 2^12220302320 is an apocalyptic number.

12220302320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220302320 is an abundant number, since it is smaller than the sum of its proper divisors (16191900760).

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

12220302320 is a wasteful number, since it uses less digits than its factorization.

12220302320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152753792 (or 152753786 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 12220302320 its reverse (2320302221), we get a palindrome (14540604541).

Subtracting from 12220302320 its reverse (2320302221), we obtain a palindrome (9900000099).

The spelling of 12220302320 in words is "twelve billion, two hundred twenty million, three hundred two thousand, three hundred twenty".