121436533 has 2 divisors, whose sum is σ = 121436534. Its totient is φ = 121436532.

The previous prime is 121436521. The next prime is 121436537. The reversal of 121436533 is 335634121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72897444 + 48539089 = 8538^2 + 6967^2 .

It is an emirp because it is prime and its reverse (335634121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121436533 - 2⁵ = 121436501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121436537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60718266 + 60718267.

It is an arithmetic number, because the mean of its divisors is an integer number (60718267).

Almost surely, 2^121436533 is an apocalyptic number.

It is an amenable number.

121436533 is a deficient number, since it is larger than the sum of its proper divisors (1).

121436533 is an equidigital number, since it uses as much as digits as its factorization.

121436533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 121436533 is about 11019.8245448827. The cubic root of 121436533 is about 495.2028322245.

The spelling of 121436533 in words is "one hundred twenty-one million, four hundred thirty-six thousand, five hundred thirty-three".