121321023221121 has 16 divisors (see below), whose sum is σ = 177182833104000. Its totient is φ = 73498064100608.

The previous prime is 121321023221119. The next prime is 121321023221171. The reversal of 121321023221121 is 121122320123121.

It is a cyclic number.

It is not a de Polignac number, because 121321023221121 - 2¹ = 121321023221119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121321023221091 and 121321023221100.

It is not an unprimeable number, because it can be changed into a prime (121321023221171) 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 15 ways as a sum of consecutive naturals, for example, 41014543221 + ... + 41014546178.

It is an arithmetic number, because the mean of its divisors is an integer number (11073927069000).

Almost surely, 2^{121321023221121} is an apocalyptic number.

It is an amenable number.

121321023221121 is a deficient number, since it is larger than the sum of its proper divisors (55861809882879).

121321023221121 is a wasteful number, since it uses less digits than its factorization.

121321023221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82029089448.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 121321023221121 its reverse (121122320123121), we get a palindrome (242443343344242).

The spelling of 121321023221121 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, twenty-three million, two hundred twenty-one thousand, one hundred twenty-one".