121353231451321 has 2 divisors, whose sum is σ = 121353231451322. Its totient is φ = 121353231451320.

The previous prime is 121353231451297. The next prime is 121353231451337. The reversal of 121353231451321 is 123154132353121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75544970938921 + 45808260512400 = 8691661^2 + 6768180^2 .

It is a cyclic number.

It is not a de Polignac number, because 121353231451321 - 2¹⁷ = 121353231320249 is a prime.

It is not a weakly prime, because it can be changed into another prime (121353231401321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60676615725660 + 60676615725661.

It is an arithmetic number, because the mean of its divisors is an integer number (60676615725661).

Almost surely, 2^{121353231451321} is an apocalyptic number.

It is an amenable number.

121353231451321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121353231451321 is an equidigital number, since it uses as much as digits as its factorization.

121353231451321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The spelling of 121353231451321 in words is "one hundred twenty-one trillion, three hundred fifty-three billion, two hundred thirty-one million, four hundred fifty-one thousand, three hundred twenty-one".