220021221211 has 8 divisors (see below), whose sum is σ = 241071289200. Its totient is φ = 199145843040.

The previous prime is 220021221197. The next prime is 220021221239. The reversal of 220021221211 is 112122120022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220021221211 - 2⁵ = 220021221179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220021225211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43669816 + ... + 43674853.

It is an arithmetic number, because the mean of its divisors is an integer number (30133911150).

Almost surely, 2^220021221211 is an apocalyptic number.

220021221211 is a deficient number, since it is larger than the sum of its proper divisors (21050067989).

220021221211 is a wasteful number, since it uses less digits than its factorization.

220021221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87344909.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220021221211 its reverse (112122120022), we get a palindrome (332143341233).

The spelling of 220021221211 in words is "two hundred twenty billion, twenty-one million, two hundred twenty-one thousand, two hundred eleven".