20030322121 has 4 divisors (see below), whose sum is σ = 20228642244. Its totient is φ = 19832002000.

The previous prime is 20030322089. The next prime is 20030322161. The reversal of 20030322121 is 12122303002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18636345225 + 1393976896 = 136515^2 + 37336^2 .

It is a cyclic number.

It is not a de Polignac number, because 20030322121 - 2⁵ = 20030322089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20030322095 and 20030322104.

It is not an unprimeable number, because it can be changed into a prime (20030322161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99159910 + ... + 99160111.

It is an arithmetic number, because the mean of its divisors is an integer number (5057160561).

Almost surely, 2^20030322121 is an apocalyptic number.

It is an amenable number.

20030322121 is a deficient number, since it is larger than the sum of its proper divisors (198320123).

20030322121 is a wasteful number, since it uses less digits than its factorization.

20030322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198320122.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20030322121 its reverse (12122303002), we get a palindrome (32152625123).

The spelling of 20030322121 in words is "twenty billion, thirty million, three hundred twenty-two thousand, one hundred twenty-one".