121940353 has 2 divisors, whose sum is σ = 121940354. Its totient is φ = 121940352.

The previous prime is 121940339. The next prime is 121940381. The reversal of 121940353 is 353049121.

It is an a-pointer prime, because the next prime (121940381) can be obtained adding 121940353 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., 87928129 + 34012224 = 9377^2 + 5832^2 .

It is a cyclic number.

It is not a de Polignac number, because 121940353 - 2²¹ = 119843201 is a prime.

It is not a weakly prime, because it can be changed into another prime (121940383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60970176 + 60970177.

It is an arithmetic number, because the mean of its divisors is an integer number (60970177).

Almost surely, 2^121940353 is an apocalyptic number.

It is an amenable number.

121940353 is a deficient number, since it is larger than the sum of its proper divisors (1).

121940353 is an equidigital number, since it uses as much as digits as its factorization.

121940353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 121940353 is about 11042.6605942590. The cubic root of 121940353 is about 495.8867254010.

Adding to 121940353 its reverse (353049121), we get a palindrome (474989474).

The spelling of 121940353 in words is "one hundred twenty-one million, nine hundred forty thousand, three hundred fifty-three".