133069021 has 2 divisors, whose sum is σ = 133069022. Its totient is φ = 133069020.

The previous prime is 133068977. The next prime is 133069063. The reversal of 133069021 is 120960331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91968100 + 41100921 = 9590^2 + 6411^2 .

It is a cyclic number.

It is not a de Polignac number, because 133069021 - 2²⁵ = 99514589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133069091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66534510 + 66534511.

It is an arithmetic number, because the mean of its divisors is an integer number (66534511).

Almost surely, 2^133069021 is an apocalyptic number.

It is an amenable number.

133069021 is a deficient number, since it is larger than the sum of its proper divisors (1).

133069021 is an equidigital number, since it uses as much as digits as its factorization.

133069021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 133069021 is about 11535.5546463965. The cubic root of 133069021 is about 510.5351565630.

The spelling of 133069021 in words is "one hundred thirty-three million, sixty-nine thousand, twenty-one".