111102121001221 has 8 divisors (see below), whose sum is σ = 128762216694144. Its totient is φ = 93889116338640.

The previous prime is 111102121001041. The next prime is 111102121001227. The reversal of 111102121001221 is 122100121201111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111102121001221 - 2¹⁷ = 111102120870149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111102121001195 and 111102121001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102121001227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111772757050 + ... + 111772758043.

It is an arithmetic number, because the mean of its divisors is an integer number (16095277086768).

Almost surely, 2^{111102121001221} is an apocalyptic number.

It is an amenable number.

111102121001221 is a deficient number, since it is larger than the sum of its proper divisors (17660095692923).

111102121001221 is an equidigital number, since it uses as much as digits as its factorization.

111102121001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223545515171.

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

Adding to 111102121001221 its reverse (122100121201111), we get a palindrome (233202242202332).

The spelling of 111102121001221 in words is "one hundred eleven trillion, one hundred two billion, one hundred twenty-one million, one thousand, two hundred twenty-one".