20601211 has 2 divisors, whose sum is σ = 20601212.
Its totient is φ = 20601210.
The previous prime is 20601199. The next prime is 20601233. The reversal of 20601211 is 11210602.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 20601211 - 25 = 20601179 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 20601191 and 20601200.
It is not a weakly prime, because it can be changed into another prime (20601241) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10300605 + 10300606.
It is an arithmetic number, because the mean of its divisors is an integer number (10300606).
Almost surely, 220601211 is an apocalyptic number.
20601211 is a deficient number, since it is larger than the sum of its proper divisors (1).
20601211 is an equidigital number, since it uses as much as digits as its factorization.
20601211 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 20601211 is about 4538.8556927931.
The cubic root of 20601211 is about 274.1348502398.
Adding to 20601211 its reverse (11210602), we get a palindrome (31811813).
The spelling of 20601211 in words is "twenty million, six hundred one thousand, two hundred eleven".