1321322101111 has 4 divisors (see below), whose sum is σ = 1342983119224. Its totient is φ = 1299661083000.

The previous prime is 1321322101087. The next prime is 1321322101193. The reversal of 1321322101111 is 1111012231231.

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 1321322101111 - 2⁷ = 1321322100983 is a prime.

It is a super-3 number, since 3×1321322101111³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321322101811) 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, 10830508965 + ... + 10830509086.

It is an arithmetic number, because the mean of its divisors is an integer number (335745779806).

Almost surely, 2^{1321322101111} is an apocalyptic number.

1321322101111 is a deficient number, since it is larger than the sum of its proper divisors (21661018113).

1321322101111 is an equidigital number, since it uses as much as digits as its factorization.

1321322101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21661018112.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1321322101111 its reverse (1111012231231), we get a palindrome (2432334332342).

The spelling of 1321322101111 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-two million, one hundred one thousand, one hundred eleven".