312220203111111 has 8 divisors (see below), whose sum is σ = 416306592751104. Its totient is φ = 208140307772600.

The previous prime is 312220203111071. The next prime is 312220203111181. The reversal of 312220203111111 is 111111302022213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312220203111111 - 2¹¹ = 312220203109063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312220203111181) 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, 1623463191 + ... + 1623655496.

It is an arithmetic number, because the mean of its divisors is an integer number (52038324093888).

Almost surely, 2^{312220203111111} is an apocalyptic number.

312220203111111 is a deficient number, since it is larger than the sum of its proper divisors (104086389639993).

312220203111111 is a wasteful number, since it uses less digits than its factorization.

312220203111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247150741.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 312220203111111 its reverse (111111302022213), we get a palindrome (423331505133324).

The spelling of 312220203111111 in words is "three hundred twelve trillion, two hundred twenty billion, two hundred three million, one hundred eleven thousand, one hundred eleven".