20100111212047 has 2 divisors, whose sum is σ = 20100111212048. Its totient is φ = 20100111212046.

The previous prime is 20100111211997. The next prime is 20100111212059. The reversal of 20100111212047 is 74021211100102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20100111212047 - 2²³ = 20100102823439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100111213047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050055606023 + 10050055606024.

It is an arithmetic number, because the mean of its divisors is an integer number (10050055606024).

Almost surely, 2^{20100111212047} is an apocalyptic number.

20100111212047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100111212047 is an equidigital number, since it uses as much as digits as its factorization.

20100111212047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 20100111212047 its reverse (74021211100102), we get a palindrome (94121322312149).

The spelling of 20100111212047 in words is "twenty trillion, one hundred billion, one hundred eleven million, two hundred twelve thousand, forty-seven".