121421033 has 2 divisors, whose sum is σ = 121421034. Its totient is φ = 121421032.

The previous prime is 121421023. The next prime is 121421081. The reversal of 121421033 is 330124121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84125584 + 37295449 = 9172^2 + 6107^2 .

It is a cyclic number.

It is not a de Polignac number, because 121421033 - 2⁶ = 121420969 is a prime.

It is not a weakly prime, because it can be changed into another prime (121421023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60710516 + 60710517.

It is an arithmetic number, because the mean of its divisors is an integer number (60710517).

Almost surely, 2^121421033 is an apocalyptic number.

It is an amenable number.

121421033 is a deficient number, since it is larger than the sum of its proper divisors (1).

121421033 is an equidigital number, since it uses as much as digits as its factorization.

121421033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121421033 is about 11019.1212444550. The cubic root of 121421033 is about 495.1817623144.

Adding to 121421033 its reverse (330124121), we get a palindrome (451545154).

The spelling of 121421033 in words is "one hundred twenty-one million, four hundred twenty-one thousand, thirty-three".