20122042013 has 2 divisors, whose sum is σ = 20122042014. Its totient is φ = 20122042012.

The previous prime is 20122042009. The next prime is 20122042019. The reversal of 20122042013 is 31024022102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12382793284 + 7739248729 = 111278^2 + 87973^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122042013 - 2² = 20122042009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20122041982 and 20122042000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122042019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061021006 + 10061021007.

It is an arithmetic number, because the mean of its divisors is an integer number (10061021007).

Almost surely, 2^20122042013 is an apocalyptic number.

It is an amenable number.

20122042013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122042013 is an equidigital number, since it uses as much as digits as its factorization.

20122042013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20122042013 its reverse (31024022102), we get a palindrome (51146064115).

The spelling of 20122042013 in words is "twenty billion, one hundred twenty-two million, forty-two thousand, thirteen".