220203541 has 4 divisors (see below), whose sum is σ = 229777632. Its totient is φ = 210629452.

The previous prime is 220203527. The next prime is 220203553. The reversal of 220203541 is 145302022.

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 a cyclic number.

It is not a de Polignac number, because 220203541 - 2¹⁷ = 220072469 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 (220203041) 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, 4787011 + ... + 4787056.

It is an arithmetic number, because the mean of its divisors is an integer number (57444408).

Almost surely, 2^220203541 is an apocalyptic number.

It is an amenable number.

220203541 is a deficient number, since it is larger than the sum of its proper divisors (9574091).

220203541 is an equidigital number, since it uses as much as digits as its factorization.

220203541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9574090.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220203541 is about 14839.2567536248. The cubic root of 220203541 is about 603.8671887936.

Adding to 220203541 its reverse (145302022), we get a palindrome (365505563).

The spelling of 220203541 in words is "two hundred twenty million, two hundred three thousand, five hundred forty-one".