121321103273 has 2 divisors, whose sum is σ = 121321103274. Its totient is φ = 121321103272.

The previous prime is 121321103263. The next prime is 121321103297. The reversal of 121321103273 is 372301123121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81757108624 + 39563994649 = 285932^2 + 198907^2 .

It is a cyclic number.

It is not a de Polignac number, because 121321103273 - 2⁴ = 121321103257 is a prime.

It is not a weakly prime, because it can be changed into another prime (121321103203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60660551636 + 60660551637.

It is an arithmetic number, because the mean of its divisors is an integer number (60660551637).

Almost surely, 2^121321103273 is an apocalyptic number.

It is an amenable number.

121321103273 is a deficient number, since it is larger than the sum of its proper divisors (1).

121321103273 is an equidigital number, since it uses as much as digits as its factorization.

121321103273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 121321103273 its reverse (372301123121), we get a palindrome (493622226394).

The spelling of 121321103273 in words is "one hundred twenty-one billion, three hundred twenty-one million, one hundred three thousand, two hundred seventy-three".