1320312220111 has 4 divisors (see below), whose sum is σ = 1320357656632. Its totient is φ = 1320266783592.

The previous prime is 1320312220103. The next prime is 1320312220153. The reversal of 1320312220111 is 1110222130231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320312220111 - 2³ = 1320312220103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320312220181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22674645 + ... + 22732798.

It is an arithmetic number, because the mean of its divisors is an integer number (330089414158).

Almost surely, 2^{1320312220111} is an apocalyptic number.

1320312220111 is a deficient number, since it is larger than the sum of its proper divisors (45436521).

1320312220111 is an equidigital number, since it uses as much as digits as its factorization.

1320312220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45436520.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1320312220111 its reverse (1110222130231), we get a palindrome (2430534350342).

The spelling of 1320312220111 in words is "one trillion, three hundred twenty billion, three hundred twelve million, two hundred twenty thousand, one hundred eleven".