111103311321221 has 8 divisors (see below), whose sum is σ = 115598821033080. Its totient is φ = 106652092345792.

The previous prime is 111103311321091. The next prime is 111103311321281. The reversal of 111103311321221 is 122123113301111.

It can be written as a sum of positive squares in 4 ways, for example, as 18702943596100 + 92400367725121 = 4324690^2 + 9612511^2 .

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 111103311321221 - 2³⁰ = 111102237579397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111103311321281) 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, 11072678990 + ... + 11072689023.

It is an arithmetic number, because the mean of its divisors is an integer number (14449852629135).

Almost surely, 2^{111103311321221} is an apocalyptic number.

It is an amenable number.

111103311321221 is a deficient number, since it is larger than the sum of its proper divisors (4495509711859).

111103311321221 is a wasteful number, since it uses less digits than its factorization.

111103311321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22145368215.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 111103311321221 its reverse (122123113301111), we get a palindrome (233226424622332).

The spelling of 111103311321221 in words is "one hundred eleven trillion, one hundred three billion, three hundred eleven million, three hundred twenty-one thousand, two hundred twenty-one".