220089621 has 4 divisors (see below), whose sum is σ = 293452832. Its totient is φ = 146726412.

The previous prime is 220089593. The next prime is 220089631. The reversal of 220089621 is 126980022.

220089621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 220089621 - 2¹³ = 220081429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220089631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36681601 + ... + 36681606.

It is an arithmetic number, because the mean of its divisors is an integer number (73363208).

Almost surely, 2^220089621 is an apocalyptic number.

It is an amenable number.

220089621 is a deficient number, since it is larger than the sum of its proper divisors (73363211).

220089621 is an equidigital number, since it uses as much as digits as its factorization.

220089621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73363210.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 220089621 is about 14835.4177898703. The cubic root of 220089621 is about 603.7630360383.

The spelling of 220089621 in words is "two hundred twenty million, eighty-nine thousand, six hundred twenty-one".