20120207 has 2 divisors, whose sum is σ = 20120208. Its totient is φ = 20120206.

The previous prime is 20120203. The next prime is 20120213. The reversal of 20120207 is 70202102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20120207 - 2² = 20120203 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20120191 and 20120200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060103 + 10060104.

It is an arithmetic number, because the mean of its divisors is an integer number (10060104).

Almost surely, 2^20120207 is an apocalyptic number.

20120207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120207 is an equidigital number, since it uses as much as digits as its factorization.

20120207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 20120207 is about 4485.5553725263. Note that the first 3 decimals coincide. The cubic root of 20120207 is about 271.9844957642.

Adding to 20120207 its reverse (70202102), we get a palindrome (90322309).

The spelling of 20120207 in words is "twenty million, one hundred twenty thousand, two hundred seven".