20321033121 has 12 divisors (see below), whose sum is σ = 30897477520. Its totient is φ = 12834336600.

The previous prime is 20321033099. The next prime is 20321033143. The reversal of 20321033121 is 12133012302.

It is an interprime number because it is at equal distance from previous prime (20321033099) and next prime (20321033143).

It is not a de Polignac number, because 20321033121 - 2⁹ = 20321032609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20321033094 and 20321033103.

It is not an unprimeable number, because it can be changed into a prime (20321033021) 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 11 ways as a sum of consecutive naturals, for example, 59418055 + ... + 59418396.

Almost surely, 2^20321033121 is an apocalyptic number.

It is an amenable number.

20321033121 is a deficient number, since it is larger than the sum of its proper divisors (10576444399).

20321033121 is a wasteful number, since it uses less digits than its factorization.

20321033121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118836476 (or 118836473 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20321033121 its reverse (12133012302), we get a palindrome (32454045423).

The spelling of 20321033121 in words is "twenty billion, three hundred twenty-one million, thirty-three thousand, one hundred twenty-one".