20121302013 has 4 divisors (see below), whose sum is σ = 26828402688. Its totient is φ = 13414201340.

The previous prime is 20121301997. The next prime is 20121302027. The reversal of 20121302013 is 31020312102.

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 20121302013 - 2⁴ = 20121301997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20121301983 and 20121302001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121302413) 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, 3353550333 + ... + 3353550338.

It is an arithmetic number, because the mean of its divisors is an integer number (6707100672).

Almost surely, 2^20121302013 is an apocalyptic number.

It is an amenable number.

20121302013 is a deficient number, since it is larger than the sum of its proper divisors (6707100675).

20121302013 is an equidigital number, since it uses as much as digits as its factorization.

20121302013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707100674.

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

Adding to 20121302013 its reverse (31020312102), we get a palindrome (51141614115).

The spelling of 20121302013 in words is "twenty billion, one hundred twenty-one million, three hundred two thousand, thirteen".