121253443 has 2 divisors, whose sum is σ = 121253444. Its totient is φ = 121253442.

The previous prime is 121253417. The next prime is 121253449. The reversal of 121253443 is 344352121.

It is a strong prime.

It is an emirp because it is prime and its reverse (344352121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121253443 - 2⁵ = 121253411 is a prime.

It is not a weakly prime, because it can be changed into another prime (121253449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60626721 + 60626722.

It is an arithmetic number, because the mean of its divisors is an integer number (60626722).

Almost surely, 2^121253443 is an apocalyptic number.

121253443 is a deficient number, since it is larger than the sum of its proper divisors (1).

121253443 is an equidigital number, since it uses as much as digits as its factorization.

121253443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 121253443 is about 11011.5141102393. The cubic root of 121253443 is about 494.9538344185.

It can be divided in two parts, 121 and 253443, that multiplied together give a palindrome (30666603).

The spelling of 121253443 in words is "one hundred twenty-one million, two hundred fifty-three thousand, four hundred forty-three".