421122133 has 2 divisors, whose sum is σ = 421122134. Its totient is φ = 421122132.

The previous prime is 421122131. The next prime is 421122139. The reversal of 421122133 is 331221124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259145604 + 161976529 = 16098^2 + 12727^2 .

It is a cyclic number.

It is not a de Polignac number, because 421122133 - 2¹ = 421122131 is a prime.

Together with 421122131, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 421122133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421122131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210561066 + 210561067.

It is an arithmetic number, because the mean of its divisors is an integer number (210561067).

Almost surely, 2^421122133 is an apocalyptic number.

It is an amenable number.

421122133 is a deficient number, since it is larger than the sum of its proper divisors (1).

421122133 is an equidigital number, since it uses as much as digits as its factorization.

421122133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 421122133 is about 20521.2605119666. The cubic root of 421122133 is about 749.5535909372.

Adding to 421122133 its reverse (331221124), we get a palindrome (752343257).

The spelling of 421122133 in words is "four hundred twenty-one million, one hundred twenty-two thousand, one hundred thirty-three".