121450321 has 2 divisors, whose sum is σ = 121450322. Its totient is φ = 121450320.

The previous prime is 121450313. The next prime is 121450339. The reversal of 121450321 is 123054121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83010321 + 38440000 = 9111^2 + 6200^2 .

It is an emirp because it is prime and its reverse (123054121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121450321 - 2³ = 121450313 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (121450421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60725160 + 60725161.

It is an arithmetic number, because the mean of its divisors is an integer number (60725161).

Almost surely, 2^121450321 is an apocalyptic number.

It is an amenable number.

121450321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121450321 is an equidigital number, since it uses as much as digits as its factorization.

121450321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 121450321 is about 11020.4501269231. The cubic root of 121450321 is about 495.2215734223.

It can be divided in two parts, 121450 and 321, that added together give a triangular number (121771 = T₄₉₃).

The spelling of 121450321 in words is "one hundred twenty-one million, four hundred fifty thousand, three hundred twenty-one".