1112100221221 has 8 divisors (see below), whose sum is σ = 1213425264384. Its totient is φ = 1010812681920.

The previous prime is 1112100221209. The next prime is 1112100221233. The reversal of 1112100221221 is 1221220012111.

It is an interprime number because it is at equal distance from previous prime (1112100221209) and next prime (1112100221233).

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 1112100221221 - 2⁹ = 1112100220709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112100221195 and 1112100221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112100281221) 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 7 ways as a sum of consecutive naturals, for example, 9313941 + ... + 9432586.

It is an arithmetic number, because the mean of its divisors is an integer number (151678158048).

Almost surely, 2^{1112100221221} is an apocalyptic number.

1112100221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1112100221221 is a deficient number, since it is larger than the sum of its proper divisors (101325043163).

1112100221221 is a wasteful number, since it uses less digits than its factorization.

1112100221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18751931.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1112100221221 its reverse (1221220012111), we get a palindrome (2333320233332).

The spelling of 1112100221221 in words is "one trillion, one hundred twelve billion, one hundred million, two hundred twenty-one thousand, two hundred twenty-one".