121022320321213 has 2 divisors, whose sum is σ = 121022320321214. Its totient is φ = 121022320321212.

The previous prime is 121022320321211. The next prime is 121022320321223. The reversal of 121022320321213 is 312123023220121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82676775026329 + 38345545294884 = 9092677^2 + 6192378^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022320321213 - 2¹ = 121022320321211 is a prime.

Together with 121022320321211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121022320321211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511160160606 + 60511160160607.

It is an arithmetic number, because the mean of its divisors is an integer number (60511160160607).

Almost surely, 2^{121022320321213} is an apocalyptic number.

It is an amenable number.

121022320321213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022320321213 is an equidigital number, since it uses as much as digits as its factorization.

121022320321213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 121022320321213 its reverse (312123023220121), we get a palindrome (433145343541334).

The spelling of 121022320321213 in words is "one hundred twenty-one trillion, twenty-two billion, three hundred twenty million, three hundred twenty-one thousand, two hundred thirteen".