20121212120027 has 2 divisors, whose sum is σ = 20121212120028. Its totient is φ = 20121212120026.

The previous prime is 20121212120017. The next prime is 20121212120059. The reversal of 20121212120027 is 72002121212102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20121212120027 - 2²⁴ = 20121195342811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20121212119984 and 20121212120011.

It is not a weakly prime, because it can be changed into another prime (20121212120017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060606060013 + 10060606060014.

It is an arithmetic number, because the mean of its divisors is an integer number (10060606060014).

Almost surely, 2^{20121212120027} is an apocalyptic number.

20121212120027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121212120027 is an equidigital number, since it uses as much as digits as its factorization.

20121212120027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 20121212120027 its reverse (72002121212102), we get a palindrome (92123333332129).

The spelling of 20121212120027 in words is "twenty trillion, one hundred twenty-one billion, two hundred twelve million, one hundred twenty thousand, twenty-seven".