220299621 has 16 divisors (see below), whose sum is σ = 301171200. Its totient is φ = 143161200.

The previous prime is 220299613. The next prime is 220299659. The reversal of 220299621 is 126992022.

It is not a de Polignac number, because 220299621 - 2³ = 220299613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220299691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75846 + ... + 78696.

It is an arithmetic number, because the mean of its divisors is an integer number (18823200).

Almost surely, 2^220299621 is an apocalyptic number.

It is an amenable number.

220299621 is a deficient number, since it is larger than the sum of its proper divisors (80871579).

220299621 is a wasteful number, since it uses less digits than its factorization.

220299621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 220299621 is about 14842.4937594732. The cubic root of 220299621 is about 603.9550031900.

The spelling of 220299621 in words is "two hundred twenty million, two hundred ninety-nine thousand, six hundred twenty-one".