20222022221 has 16 divisors (see below), whose sum is σ = 21671351040. Its totient is φ = 18812243520.

The previous prime is 20222022203. The next prime is 20222022253. The reversal of 20222022221 is 12222022202.

It is not a de Polignac number, because 20222022221 - 2²⁶ = 20154913357 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 20222022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222022281) 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 15 ways as a sum of consecutive naturals, for example, 696236 + ... + 724698.

It is an arithmetic number, because the mean of its divisors is an integer number (1354459440).

Almost surely, 2^20222022221 is an apocalyptic number.

It is an amenable number.

20222022221 is a deficient number, since it is larger than the sum of its proper divisors (1449328819).

20222022221 is a wasteful number, since it uses less digits than its factorization.

20222022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29156.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20222022221 its reverse (12222022202), we get a palindrome (32444044423).

The spelling of 20222022221 in words is "twenty billion, two hundred twenty-two million, twenty-two thousand, two hundred twenty-one".