111321002101221 has 32 divisors (see below), whose sum is σ = 181225962345600. Its totient is φ = 66974812122240.

The previous prime is 111321002101219. The next prime is 111321002101271. The reversal of 111321002101221 is 122101200123111.

It is a happy number.

111321002101221 is a `hidden beast` number, since 1 + 1 + 132 + 100 + 210 + 1 + 221 = 666.

It is not a de Polignac number, because 111321002101221 - 2¹ = 111321002101219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111321002101194 and 111321002101203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111321002101271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1367908906 + ... + 1367990283.

It is an arithmetic number, because the mean of its divisors is an integer number (5663311323300).

Almost surely, 2^{111321002101221} is an apocalyptic number.

111321002101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111321002101221 is a deficient number, since it is larger than the sum of its proper divisors (69904960244379).

111321002101221 is a wasteful number, since it uses less digits than its factorization.

111321002101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2735899346 (or 2735899340 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 111321002101221 its reverse (122101200123111), we get a palindrome (233422202224332).

The spelling of 111321002101221 in words is "one hundred eleven trillion, three hundred twenty-one billion, two million, one hundred one thousand, two hundred twenty-one".