220133971 has 2 divisors, whose sum is σ = 220133972. Its totient is φ = 220133970.

The previous prime is 220133959. The next prime is 220133987. The reversal of 220133971 is 179331022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220133971 - 2¹⁹ = 219609683 is a prime.

It is not a weakly prime, because it can be changed into another prime (220133371) 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, 110066985 + 110066986.

It is an arithmetic number, because the mean of its divisors is an integer number (110066986).

Almost surely, 2^220133971 is an apocalyptic number.

220133971 is a deficient number, since it is larger than the sum of its proper divisors (1).

220133971 is an equidigital number, since it uses as much as digits as its factorization.

220133971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 220133971 is about 14836.9124483499. The cubic root of 220133971 is about 603.8035878404.

Adding to 220133971 its reverse (179331022), we get a palindrome (399464993).

The spelling of 220133971 in words is "two hundred twenty million, one hundred thirty-three thousand, nine hundred seventy-one".