20303111313121 has 16 divisors (see below), whose sum is σ = 24992125095168. Its totient is φ = 16061634187200.

The previous prime is 20303111313077. The next prime is 20303111313131. The reversal of 20303111313121 is 12131311130302.

It is not a de Polignac number, because 20303111313121 - 2¹³ = 20303111304929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20303111313092 and 20303111313101.

It is not an unprimeable number, because it can be changed into a prime (20303111313131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15808990 + ... + 17044951.

It is an arithmetic number, because the mean of its divisors is an integer number (1562007818448).

Almost surely, 2^{20303111313121} is an apocalyptic number.

It is an amenable number.

20303111313121 is a deficient number, since it is larger than the sum of its proper divisors (4689013782047).

20303111313121 is a wasteful number, since it uses less digits than its factorization.

20303111313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32860752.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 20303111313121 its reverse (12131311130302), we get a palindrome (32434422443423).

The spelling of 20303111313121 in words is "twenty trillion, three hundred three billion, one hundred eleven million, three hundred thirteen thousand, one hundred twenty-one".