1101310112221 has 4 divisors (see below), whose sum is σ = 1201429213344. Its totient is φ = 1001191011100.

The previous prime is 1101310112219. The next prime is 1101310112237. The reversal of 1101310112221 is 1222110131011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1101310112221 - 2¹ = 1101310112219 is a prime.

It is a super-2 number, since 2×1101310112221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101310112195 and 1101310112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101310112921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50059550545 + ... + 50059550566.

It is an arithmetic number, because the mean of its divisors is an integer number (300357303336).

Almost surely, 2^{1101310112221} is an apocalyptic number.

1101310112221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101310112221 is a deficient number, since it is larger than the sum of its proper divisors (100119101123).

1101310112221 is a wasteful number, since it uses less digits than its factorization.

1101310112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100119101122.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1101310112221 its reverse (1222110131011), we get a palindrome (2323420243232).

The spelling of 1101310112221 in words is "one trillion, one hundred one billion, three hundred ten million, one hundred twelve thousand, two hundred twenty-one".