20222021121 has 8 divisors (see below), whose sum is σ = 26968695264. Its totient is φ = 13478347200.

The previous prime is 20222021009. The next prime is 20222021161. The reversal of 20222021121 is 12112022202.

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

It is not a de Polignac number, because 20222021121 - 2⁷ = 20222020993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20222021121.

It is not an unprimeable number, because it can be changed into a prime (20222021161) 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, 734280 + ... + 761321.

It is an arithmetic number, because the mean of its divisors is an integer number (3371086908).

Almost surely, 2^20222021121 is an apocalyptic number.

It is an amenable number.

20222021121 is a deficient number, since it is larger than the sum of its proper divisors (6746674143).

20222021121 is a wasteful number, since it uses less digits than its factorization.

20222021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500111.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20222021121 its reverse (12112022202), we get a palindrome (32334043323).

The spelling of 20222021121 in words is "twenty billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty-one".