121321103321 has 8 divisors (see below), whose sum is σ = 132539105088. Its totient is φ = 110134570000.

The previous prime is 121321103297. The next prime is 121321103339. The reversal of 121321103321 is 123301123121.

It is a happy number.

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 121321103321 - 2⁶ = 121321103257 is a prime.

It is a super-2 number, since 2×121321103321² (a number of 23 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 = 121321103293 and 121321103302.

It is not an unprimeable number, because it can be changed into a prime (121321103221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7859045 + ... + 7874466.

It is an arithmetic number, because the mean of its divisors is an integer number (16567388136).

Almost surely, 2^121321103321 is an apocalyptic number.

121321103321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121321103321 is a deficient number, since it is larger than the sum of its proper divisors (11218001767).

121321103321 is a wasteful number, since it uses less digits than its factorization.

121321103321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15734223.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121321103321 its reverse (123301123121), we get a palindrome (244622226442).

The spelling of 121321103321 in words is "one hundred twenty-one billion, three hundred twenty-one million, one hundred three thousand, three hundred twenty-one".