20121110313 has 4 divisors (see below), whose sum is σ = 26828147088. Its totient is φ = 13414073540.

The previous prime is 20121110297. The next prime is 20121110353. The reversal of 20121110313 is 31301112102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20121110313 - 2⁴ = 20121110297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20121110292 and 20121110301.

It is not an unprimeable number, because it can be changed into a prime (20121110353) 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, 3353518383 + ... + 3353518388.

It is an arithmetic number, because the mean of its divisors is an integer number (6707036772).

Almost surely, 2^20121110313 is an apocalyptic number.

It is an amenable number.

20121110313 is a deficient number, since it is larger than the sum of its proper divisors (6707036775).

20121110313 is an equidigital number, since it uses as much as digits as its factorization.

20121110313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707036774.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20121110313 its reverse (31301112102), we get a palindrome (51422222415).

The spelling of 20121110313 in words is "twenty billion, one hundred twenty-one million, one hundred ten thousand, three hundred thirteen".