121344653 has 2 divisors, whose sum is σ = 121344654. Its totient is φ = 121344652.

The previous prime is 121344649. The next prime is 121344661. The reversal of 121344653 is 356443121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92582884 + 28761769 = 9622^2 + 5363^2 .

It is a cyclic number.

It is not a de Polignac number, because 121344653 - 2² = 121344649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121344683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60672326 + 60672327.

It is an arithmetic number, because the mean of its divisors is an integer number (60672327).

Almost surely, 2^121344653 is an apocalyptic number.

It is an amenable number.

121344653 is a deficient number, since it is larger than the sum of its proper divisors (1).

121344653 is an equidigital number, since it uses as much as digits as its factorization.

121344653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 121344653 is about 11015.6549056332. The cubic root of 121344653 is about 495.0779090376.

Adding to 121344653 its reverse (356443121), we get a palindrome (477787774).

The spelling of 121344653 in words is "one hundred twenty-one million, three hundred forty-four thousand, six hundred fifty-three".