210001220027 has 2 divisors, whose sum is σ = 210001220028. Its totient is φ = 210001220026.

The previous prime is 210001219937. The next prime is 210001220041. The reversal of 210001220027 is 720022100012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210001220027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210001219987 and 210001220014.

It is not a weakly prime, because it can be changed into another prime (210001220227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000610013 + 105000610014.

It is an arithmetic number, because the mean of its divisors is an integer number (105000610014).

Almost surely, 2^210001220027 is an apocalyptic number.

210001220027 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001220027 is an equidigital number, since it uses as much as digits as its factorization.

210001220027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 17.

Adding to 210001220027 its reverse (720022100012), we get a palindrome (930023320039).

The spelling of 210001220027 in words is "two hundred ten billion, one million, two hundred twenty thousand, twenty-seven".