20121212102207 has 2 divisors, whose sum is σ = 20121212102208. Its totient is φ = 20121212102206.

The previous prime is 20121212102197. The next prime is 20121212102219. The reversal of 20121212102207 is 70220121212102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20121212102207 - 2⁸ = 20121212101951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121212102227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060606051103 + 10060606051104.

It is an arithmetic number, because the mean of its divisors is an integer number (10060606051104).

Almost surely, 2^{20121212102207} is an apocalyptic number.

20121212102207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121212102207 is an equidigital number, since it uses as much as digits as its factorization.

20121212102207 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 20121212102207 its reverse (70220121212102), we get a palindrome (90341333314309).

The spelling of 20121212102207 in words is "twenty trillion, one hundred twenty-one billion, two hundred twelve million, one hundred two thousand, two hundred seven".