20112012121247 has 2 divisors, whose sum is σ = 20112012121248. Its totient is φ = 20112012121246.

The previous prime is 20112012121189. The next prime is 20112012121261. The reversal of 20112012121247 is 74212121021102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20112012121247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112012121147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056006060623 + 10056006060624.

It is an arithmetic number, because the mean of its divisors is an integer number (10056006060624).

Almost surely, 2^{20112012121247} is an apocalyptic number.

20112012121247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112012121247 is an equidigital number, since it uses as much as digits as its factorization.

20112012121247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 20112012121247 its reverse (74212121021102), we get a palindrome (94324133142349).

The spelling of 20112012121247 in words is "twenty trillion, one hundred twelve billion, twelve million, one hundred twenty-one thousand, two hundred forty-seven".