220020427 has 8 divisors (see below), whose sum is σ = 240140592. Its totient is φ = 199920000.

The previous prime is 220020421. The next prime is 220020433. The reversal of 220020427 is 724020022.

It is an interprime number because it is at equal distance from previous prime (220020421) and next prime (220020433).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220020427 - 2¹⁵ = 219987659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220020421) 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 in 7 ways as a sum of consecutive naturals, for example, 27927 + ... + 34927.

It is an arithmetic number, because the mean of its divisors is an integer number (30017574).

Almost surely, 2^220020427 is an apocalyptic number.

220020427 is a deficient number, since it is larger than the sum of its proper divisors (20120165).

220020427 is a wasteful number, since it uses less digits than its factorization.

220020427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9869.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 220020427 is about 14833.0855522376. The cubic root of 220020427 is about 603.6997570308.

Adding to 220020427 its reverse (724020022), we get a palindrome (944040449).

The spelling of 220020427 in words is "two hundred twenty million, twenty thousand, four hundred twenty-seven".