20121010601 has 2 divisors, whose sum is σ = 20121010602. Its totient is φ = 20121010600.

The previous prime is 20121010573. The next prime is 20121010649. The reversal of 20121010601 is 10601012102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19972755625 + 148254976 = 141325^2 + 12176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20121010601 is a prime.

It is not a weakly prime, because it can be changed into another prime (20121010201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060505300 + 10060505301.

It is an arithmetic number, because the mean of its divisors is an integer number (10060505301).

Almost surely, 2^20121010601 is an apocalyptic number.

It is an amenable number.

20121010601 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121010601 is an equidigital number, since it uses as much as digits as its factorization.

20121010601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20121010601 its reverse (10601012102), we get a palindrome (30722022703).

The spelling of 20121010601 in words is "twenty billion, one hundred twenty-one million, ten thousand, six hundred one".