12612001 has 2 divisors, whose sum is σ = 12612002. Its totient is φ = 12612000.

The previous prime is 12611999. The next prime is 12612091. The reversal of 12612001 is 10021621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8910225 + 3701776 = 2985^2 + 1924^2 .

It is a cyclic number.

It is not a de Polignac number, because 12612001 - 2¹ = 12611999 is a prime.

Together with 12611999, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12612091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6306000 + 6306001.

It is an arithmetic number, because the mean of its divisors is an integer number (6306001).

Almost surely, 2^12612001 is an apocalyptic number.

It is an amenable number.

12612001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12612001 is an equidigital number, since it uses as much as digits as its factorization.

12612001 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 13.

The square root of 12612001 is about 3551.3379168984. The cubic root of 12612001 is about 232.7705318191.

Adding to 12612001 its reverse (10021621), we get a palindrome (22633622).

The spelling of 12612001 in words is "twelve million, six hundred twelve thousand, one".