121121003321 has 2 divisors, whose sum is σ = 121121003322. Its totient is φ = 121121003320.

The previous prime is 121121003243. The next prime is 121121003413. The reversal of 121121003321 is 123300121121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113949454096 + 7171549225 = 337564^2 + 84685^2 .

It is a cyclic number.

It is not a de Polignac number, because 121121003321 - 2²² = 121116809017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121121003321.

It is not a weakly prime, because it can be changed into another prime (121121003221) 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 as a sum of consecutive naturals, namely, 60560501660 + 60560501661.

It is an arithmetic number, because the mean of its divisors is an integer number (60560501661).

Almost surely, 2^121121003321 is an apocalyptic number.

It is an amenable number.

121121003321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121003321 is an equidigital number, since it uses as much as digits as its factorization.

121121003321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121121003321 its reverse (123300121121), we get a palindrome (244421124442).

The spelling of 121121003321 in words is "one hundred twenty-one billion, one hundred twenty-one million, three thousand, three hundred twenty-one".