121202443 has 2 divisors, whose sum is σ = 121202444. Its totient is φ = 121202442.

The previous prime is 121202429. The next prime is 121202447. The reversal of 121202443 is 344202121.

It is a strong prime.

It is an emirp because it is prime and its reverse (344202121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121202443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121202443.

It is not a weakly prime, because it can be changed into another prime (121202447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601221 + 60601222.

It is an arithmetic number, because the mean of its divisors is an integer number (60601222).

Almost surely, 2^121202443 is an apocalyptic number.

121202443 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202443 is an equidigital number, since it uses as much as digits as its factorization.

121202443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 121202443 is about 11009.1981088543. The cubic root of 121202443 is about 494.8844310684.

Adding to 121202443 its reverse (344202121), we get a palindrome (465404564).

The spelling of 121202443 in words is "one hundred twenty-one million, two hundred two thousand, four hundred forty-three".