20301331121 has 4 divisors (see below), whose sum is σ = 20313511152. Its totient is φ = 20289151092.

The previous prime is 20301331091. The next prime is 20301331123. The reversal of 20301331121 is 12113310302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20301331121 - 2¹⁰ = 20301330097 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 20301331121.

It is not an unprimeable number, because it can be changed into a prime (20301331123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6087515 + ... + 6090848.

It is an arithmetic number, because the mean of its divisors is an integer number (5078377788).

Almost surely, 2^20301331121 is an apocalyptic number.

It is an amenable number.

20301331121 is a deficient number, since it is larger than the sum of its proper divisors (12180031).

20301331121 is a wasteful number, since it uses less digits than its factorization.

20301331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12180030.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20301331121 its reverse (12113310302), we get a palindrome (32414641423).

The spelling of 20301331121 in words is "twenty billion, three hundred one million, three hundred thirty-one thousand, one hundred twenty-one".