220011033221 has 4 divisors (see below), whose sum is σ = 251441180832. Its totient is φ = 188580885612.

The previous prime is 220011033199. The next prime is 220011033227. The reversal of 220011033221 is 122330110022.

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 220011033221 - 2²² = 220006838917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220011033221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220011033227) 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, 15715073795 + ... + 15715073808.

It is an arithmetic number, because the mean of its divisors is an integer number (62860295208).

Almost surely, 2^220011033221 is an apocalyptic number.

It is an amenable number.

220011033221 is a deficient number, since it is larger than the sum of its proper divisors (31430147611).

220011033221 is an equidigital number, since it uses as much as digits as its factorization.

220011033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31430147610.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 220011033221 its reverse (122330110022), we get a palindrome (342341143243).

The spelling of 220011033221 in words is "two hundred twenty billion, eleven million, thirty-three thousand, two hundred twenty-one".