312220120302220 has 48 divisors (see below), whose sum is σ = 723319708372128. Its totient is φ = 112469536765440.

The previous prime is 312220120302173. The next prime is 312220120302247. The reversal of 312220120302220 is 22203021022213.

It is a junction number, because it is equal to n+sod(n) for n = 312220120302191 and 312220120302200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14644460274 + ... + 14644481593.

It is an arithmetic number, because the mean of its divisors is an integer number (15069160591086).

Almost surely, 2^{312220120302220} is an apocalyptic number.

It is an amenable number.

312220120302220 is an abundant number, since it is smaller than the sum of its proper divisors (411099588069908).

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

312220120302220 is a wasteful number, since it uses less digits than its factorization.

312220120302220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29288941930 (or 29288941928 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 312220120302220 its reverse (22203021022213), we get a palindrome (334423141324433).

The spelling of 312220120302220 in words is "three hundred twelve trillion, two hundred twenty billion, one hundred twenty million, three hundred two thousand, two hundred twenty".