121321211103321 has 8 divisors (see below), whose sum is σ = 161885951177664. Its totient is φ = 80818639215600.

The previous prime is 121321211103299. The next prime is 121321211103329. The reversal of 121321211103321 is 123301112123121.

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

It is not a de Polignac number, because 121321211103321 - 2¹⁹ = 121321210579033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121321211103291 and 121321211103300.

It is not an unprimeable number, because it can be changed into a prime (121321211103329) 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, 15542042101 + ... + 15542049906.

It is an arithmetic number, because the mean of its divisors is an integer number (20235743897208).

Almost surely, 2^{121321211103321} is an apocalyptic number.

It is an amenable number.

121321211103321 is a deficient number, since it is larger than the sum of its proper divisors (40564740074343).

121321211103321 is a wasteful number, since it uses less digits than its factorization.

121321211103321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31084093311.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 121321211103321 its reverse (123301112123121), we get a palindrome (244622323226442).

The spelling of 121321211103321 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, two hundred eleven million, one hundred three thousand, three hundred twenty-one".