20111212102067 has 2 divisors, whose sum is σ = 20111212102068. Its totient is φ = 20111212102066.

The previous prime is 20111212102043. The next prime is 20111212102103. The reversal of 20111212102067 is 76020121211102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20111212102067 - 2⁴⁴ = 2519026057651 is a prime.

It is not a weakly prime, because it can be changed into another prime (20111212102027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055606051033 + 10055606051034.

It is an arithmetic number, because the mean of its divisors is an integer number (10055606051034).

Almost surely, 2^{20111212102067} is an apocalyptic number.

20111212102067 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111212102067 is an equidigital number, since it uses as much as digits as its factorization.

20111212102067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 20111212102067 its reverse (76020121211102), we get a palindrome (96131333313169).

The spelling of 20111212102067 in words is "twenty trillion, one hundred eleven billion, two hundred twelve million, one hundred two thousand, sixty-seven".