121321100330321 has 4 divisors (see below), whose sum is σ = 121322441889600. Its totient is φ = 121319758771044.

The previous prime is 121321100330249. The next prime is 121321100330341. The reversal of 121321100330321 is 123033001123121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121321100330321 - 2³⁴ = 121303920461137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121321100330341) 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 3 ways as a sum of consecutive naturals, for example, 670643981 + ... + 670824858.

It is an arithmetic number, because the mean of its divisors is an integer number (30330610472400).

Almost surely, 2^{121321100330321} is an apocalyptic number.

It is an amenable number.

121321100330321 is a deficient number, since it is larger than the sum of its proper divisors (1341559279).

121321100330321 is an equidigital number, since it uses as much as digits as its factorization.

121321100330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341559278.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121321100330321 its reverse (123033001123121), we get a palindrome (244354101453442).

The spelling of 121321100330321 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, one hundred million, three hundred thirty thousand, three hundred twenty-one".