20301123121 has 32 divisors (see below), whose sum is σ = 22791138048. Its totient is φ = 17983088640.

The previous prime is 20301123077. The next prime is 20301123131. The reversal of 20301123121 is 12132110302.

It is not a de Polignac number, because 20301123121 - 2⁷ = 20301122993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20301123095 and 20301123104.

It is not an unprimeable number, because it can be changed into a prime (20301123131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23147935 + ... + 23148811.

It is an arithmetic number, because the mean of its divisors is an integer number (712223064).

Almost surely, 2^20301123121 is an apocalyptic number.

It is an amenable number.

20301123121 is a deficient number, since it is larger than the sum of its proper divisors (2490014927).

20301123121 is a wasteful number, since it uses less digits than its factorization.

20301123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20301123121 its reverse (12132110302), we get a palindrome (32433233423).

The spelling of 20301123121 in words is "twenty billion, three hundred one million, one hundred twenty-three thousand, one hundred twenty-one".