20301310121 has 4 divisors (see below), whose sum is σ = 21495504852. Its totient is φ = 19107115392.

The previous prime is 20301310097. The next prime is 20301310151. The reversal of 20301310121 is 12101310302.

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 19081554496 + 1219755625 = 138136^2 + 34925^2 .

It is a cyclic number.

It is not a de Polignac number, because 20301310121 - 2¹⁰ = 20301309097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20301310096 and 20301310105.

It is not an unprimeable number, because it can be changed into a prime (20301310151) 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, 597097340 + ... + 597097373.

It is an arithmetic number, because the mean of its divisors is an integer number (5373876213).

Almost surely, 2^20301310121 is an apocalyptic number.

It is an amenable number.

20301310121 is a deficient number, since it is larger than the sum of its proper divisors (1194194731).

20301310121 is a wasteful number, since it uses less digits than its factorization.

20301310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194194730.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20301310121 its reverse (12101310302), we get a palindrome (32402620423).

The spelling of 20301310121 in words is "twenty billion, three hundred one million, three hundred ten thousand, one hundred twenty-one".