20130020111 has 2 divisors, whose sum is σ = 20130020112. Its totient is φ = 20130020110.

The previous prime is 20130020021. The next prime is 20130020137. The reversal of 20130020111 is 11102003102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20130020111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20130020092 and 20130020101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20130020411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065010055 + 10065010056.

It is an arithmetic number, because the mean of its divisors is an integer number (10065010056).

Almost surely, 2^20130020111 is an apocalyptic number.

20130020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130020111 is an equidigital number, since it uses as much as digits as its factorization.

20130020111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20130020111 its reverse (11102003102), we get a palindrome (31232023213).

The spelling of 20130020111 in words is "twenty billion, one hundred thirty million, twenty thousand, one hundred eleven".