220399871 has 2 divisors, whose sum is σ = 220399872. Its totient is φ = 220399870.

The previous prime is 220399841. The next prime is 220399901. The reversal of 220399871 is 178993022.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (220399841) and next prime (220399901).

It is a cyclic number.

It is not a de Polignac number, because 220399871 - 2²² = 216205567 is a prime.

It is a super-2 number, since 2×220399871² = 97152206273633282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220399831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110199935 + 110199936.

It is an arithmetic number, because the mean of its divisors is an integer number (110199936).

Almost surely, 2^220399871 is an apocalyptic number.

220399871 is a deficient number, since it is larger than the sum of its proper divisors (1).

220399871 is an equidigital number, since it uses as much as digits as its factorization.

220399871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 220399871 is about 14845.8705032746. The cubic root of 220399871 is about 604.0466016337.

The spelling of 220399871 in words is "two hundred twenty million, three hundred ninety-nine thousand, eight hundred seventy-one".