20302013121 has 16 divisors (see below), whose sum is σ = 29320124736. Its totient is φ = 12421325376.

The previous prime is 20302013113. The next prime is 20302013159. The reversal of 20302013121 is 12131020302.

It is not a de Polignac number, because 20302013121 - 2³ = 20302013113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20302013121.

It is not an unprimeable number, because it can be changed into a prime (20302013101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1497775 + ... + 1511268.

It is an arithmetic number, because the mean of its divisors is an integer number (1832507796).

Almost surely, 2^20302013121 is an apocalyptic number.

It is an amenable number.

20302013121 is a deficient number, since it is larger than the sum of its proper divisors (9018111615).

20302013121 is a wasteful number, since it uses less digits than its factorization.

20302013121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009232.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20302013121 its reverse (12131020302), we get a palindrome (32433033423).

The spelling of 20302013121 in words is "twenty billion, three hundred two million, thirteen thousand, one hundred twenty-one".