220550544121 has 4 divisors (see below), whose sum is σ = 221052937600. Its totient is φ = 220048150644.

The previous prime is 220550544119. The next prime is 220550544127. The reversal of 220550544121 is 121445055022.

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 220550544121 - 2¹ = 220550544119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220550544127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251196081 + ... + 251196958.

It is an arithmetic number, because the mean of its divisors is an integer number (55263234400).

Almost surely, 2^220550544121 is an apocalyptic number.

It is an amenable number.

220550544121 is a deficient number, since it is larger than the sum of its proper divisors (502393479).

220550544121 is an equidigital number, since it uses as much as digits as its factorization.

220550544121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502393478.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 220550544121 its reverse (121445055022), we get a palindrome (341995599143).

The spelling of 220550544121 in words is "two hundred twenty billion, five hundred fifty million, five hundred forty-four thousand, one hundred twenty-one".