133110421 has 2 divisors, whose sum is σ = 133110422. Its totient is φ = 133110420.

The previous prime is 133110403. The next prime is 133110437. The reversal of 133110421 is 124011331.

It is an a-pointer prime, because the next prime (133110437) can be obtained adding 133110421 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123432100 + 9678321 = 11110^2 + 3111^2 .

It is a cyclic number.

It is not a de Polignac number, because 133110421 - 2⁵ = 133110389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133110395 and 133110404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133110121) 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, 66555210 + 66555211.

It is an arithmetic number, because the mean of its divisors is an integer number (66555211).

Almost surely, 2^133110421 is an apocalyptic number.

It is an amenable number.

133110421 is a deficient number, since it is larger than the sum of its proper divisors (1).

133110421 is an equidigital number, since it uses as much as digits as its factorization.

133110421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 133110421 is about 11537.3489589247. The cubic root of 133110421 is about 510.5880964178.

Adding to 133110421 its reverse (124011331), we get a palindrome (257121752).

The spelling of 133110421 in words is "one hundred thirty-three million, one hundred ten thousand, four hundred twenty-one".