20121010201 has 2 divisors, whose sum is σ = 20121010202. Its totient is φ = 20121010200.

The previous prime is 20121010193. The next prime is 20121010249. The reversal of 20121010201 is 10201012102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13433041801 + 6687968400 = 115901^2 + 81780^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121010201 - 2³ = 20121010193 is a prime.

It is not a weakly prime, because it can be changed into another prime (20121010601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060505100 + 10060505101.

It is an arithmetic number, because the mean of its divisors is an integer number (10060505101).

Almost surely, 2^20121010201 is an apocalyptic number.

It is an amenable number.

20121010201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121010201 is an equidigital number, since it uses as much as digits as its factorization.

20121010201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20121010201 its reverse (10201012102), we get a palindrome (30322022303).

The spelling of 20121010201 in words is "twenty billion, one hundred twenty-one million, ten thousand, two hundred one".