20313120121 has 8 divisors (see below), whose sum is σ = 23494693824. Its totient is φ = 17201471280.

The previous prime is 20313120119. The next prime is 20313120131. The reversal of 20313120121 is 12102131302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20313120121 - 2¹ = 20313120119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20313120095 and 20313120104.

It is not an unprimeable number, because it can be changed into a prime (20313120131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17480590 + ... + 17481751.

It is an arithmetic number, because the mean of its divisors is an integer number (2936836728).

Almost surely, 2^20313120121 is an apocalyptic number.

It is an amenable number.

20313120121 is a deficient number, since it is larger than the sum of its proper divisors (3181573703).

20313120121 is an equidigital number, since it uses as much as digits as its factorization.

20313120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34962431.

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

Adding to 20313120121 its reverse (12102131302), we get a palindrome (32415251423).

The spelling of 20313120121 in words is "twenty billion, three hundred thirteen million, one hundred twenty thousand, one hundred twenty-one".