12090101 has 2 divisors, whose sum is σ = 12090102. Its totient is φ = 12090100.

The previous prime is 12090097. The next prime is 12090107. The reversal of 12090101 is 10109021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9449476 + 2640625 = 3074^2 + 1625^2 .

It is a cyclic number.

It is not a de Polignac number, because 12090101 - 2² = 12090097 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12090107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6045050 + 6045051.

It is an arithmetic number, because the mean of its divisors is an integer number (6045051).

Almost surely, 2^12090101 is an apocalyptic number.

It is an amenable number.

12090101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12090101 is an equidigital number, since it uses as much as digits as its factorization.

12090101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 12090101 is about 3477.0822538444. The cubic root of 12090101 is about 229.5144197900.

Adding to 12090101 its reverse (10109021), we get a palindrome (22199122).

The spelling of 12090101 in words is "twelve million, ninety thousand, one hundred one".