1101111320321 has 16 divisors (see below), whose sum is σ = 1113520867200. Its totient is φ = 1088743163520.

The previous prime is 1101111320303. The next prime is 1101111320339. The reversal of 1101111320321 is 1230231111011.

It is an interprime number because it is at equal distance from previous prime (1101111320303) and next prime (1101111320339).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101111320321 is a prime.

It is a super-2 number, since 2×1101111320321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101111320321.

It is not an unprimeable number, because it can be changed into a prime (1101111320521) 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, 140857205 + ... + 140865021.

It is an arithmetic number, because the mean of its divisors is an integer number (69595054200).

Almost surely, 2^{1101111320321} is an apocalyptic number.

It is an amenable number.

1101111320321 is a deficient number, since it is larger than the sum of its proper divisors (12409546879).

1101111320321 is a wasteful number, since it uses less digits than its factorization.

1101111320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10264.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1101111320321 its reverse (1230231111011), we get a palindrome (2331342431332).

The spelling of 1101111320321 in words is "one trillion, one hundred one billion, one hundred eleven million, three hundred twenty thousand, three hundred twenty-one".