20122111130111 has 2 divisors, whose sum is σ = 20122111130112. Its totient is φ = 20122111130110.

The previous prime is 20122111130083. The next prime is 20122111130117. The reversal of 20122111130111 is 11103111122102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122111130111 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20122111130111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122111130117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061055565055 + 10061055565056.

It is an arithmetic number, because the mean of its divisors is an integer number (10061055565056).

Almost surely, 2^{20122111130111} is an apocalyptic number.

20122111130111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122111130111 is an equidigital number, since it uses as much as digits as its factorization.

20122111130111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 20122111130111 its reverse (11103111122102), we get a palindrome (31225222252213).

The spelling of 20122111130111 in words is "twenty trillion, one hundred twenty-two billion, one hundred eleven million, one hundred thirty thousand, one hundred eleven".