133220377 has 2 divisors, whose sum is σ = 133220378. Its totient is φ = 133220376.

The previous prime is 133220369. The next prime is 133220383. The reversal of 133220377 is 773022331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126990361 + 6230016 = 11269^2 + 2496^2 .

It is a cyclic number.

It is not a de Polignac number, because 133220377 - 2³ = 133220369 is a prime.

It is not a weakly prime, because it can be changed into another prime (133220327) 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, 66610188 + 66610189.

It is an arithmetic number, because the mean of its divisors is an integer number (66610189).

Almost surely, 2^133220377 is an apocalyptic number.

It is an amenable number.

133220377 is a deficient number, since it is larger than the sum of its proper divisors (1).

133220377 is an equidigital number, since it uses as much as digits as its factorization.

133220377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 133220377 is about 11542.1131947317. The cubic root of 133220377 is about 510.7286483310.

The spelling of 133220377 in words is "one hundred thirty-three million, two hundred twenty thousand, three hundred seventy-seven".