20121111102067 has 2 divisors, whose sum is σ = 20121111102068. Its totient is φ = 20121111102066.

The previous prime is 20121111102031. The next prime is 20121111102133. The reversal of 20121111102067 is 76020111112102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20121111102067 - 2¹⁹ = 20121110577779 is a prime.

It is a super-2 number, since 2×20121111102067² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20121111102007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060555551033 + 10060555551034.

It is an arithmetic number, because the mean of its divisors is an integer number (10060555551034).

Almost surely, 2^{20121111102067} is an apocalyptic number.

20121111102067 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121111102067 is an equidigital number, since it uses as much as digits as its factorization.

20121111102067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 25.

Adding to 20121111102067 its reverse (76020111112102), we get a palindrome (96141222214169).

The spelling of 20121111102067 in words is "twenty trillion, one hundred twenty-one billion, one hundred eleven million, one hundred two thousand, sixty-seven".