220220121211 has 4 divisors (see below), whose sum is σ = 220236419592. Its totient is φ = 220203822832.

The previous prime is 220220121161. The next prime is 220220121223. The reversal of 220220121211 is 112121022022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220220121211 - 2¹⁹ = 220219596923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220220121811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8128906 + ... + 8155951.

It is an arithmetic number, because the mean of its divisors is an integer number (55059104898).

Almost surely, 2^220220121211 is an apocalyptic number.

220220121211 is a deficient number, since it is larger than the sum of its proper divisors (16298381).

220220121211 is a wasteful number, since it uses less digits than its factorization.

220220121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16298380.

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

Adding to 220220121211 its reverse (112121022022), we get a palindrome (332341143233).

The spelling of 220220121211 in words is "two hundred twenty billion, two hundred twenty million, one hundred twenty-one thousand, two hundred eleven".