121123203373 has 2 divisors, whose sum is σ = 121123203374. Its totient is φ = 121123203372.

The previous prime is 121123203361. The next prime is 121123203401. The reversal of 121123203373 is 373302321121.

It is a happy number.

It is an a-pointer prime, because the next prime (121123203401) can be obtained adding 121123203373 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100421173449 + 20702029924 = 316893^2 + 143882^2 .

It is a cyclic number.

It is not a de Polignac number, because 121123203373 - 2²¹ = 121121106221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121123203353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561601686 + 60561601687.

It is an arithmetic number, because the mean of its divisors is an integer number (60561601687).

Almost surely, 2^121123203373 is an apocalyptic number.

It is an amenable number.

121123203373 is a deficient number, since it is larger than the sum of its proper divisors (1).

121123203373 is an equidigital number, since it uses as much as digits as its factorization.

121123203373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

Adding to 121123203373 its reverse (373302321121), we get a palindrome (494425524494).

The spelling of 121123203373 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred three thousand, three hundred seventy-three".