221001012227 has 2 divisors, whose sum is σ = 221001012228. Its totient is φ = 221001012226.

The previous prime is 221001012217. The next prime is 221001012293. The reversal of 221001012227 is 722210100122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221001012227 - 2²⁴ = 220984235011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221001012199 and 221001012208.

It is not a weakly prime, because it can be changed into another prime (221001012217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500506113 + 110500506114.

It is an arithmetic number, because the mean of its divisors is an integer number (110500506114).

Almost surely, 2^221001012227 is an apocalyptic number.

221001012227 is a deficient number, since it is larger than the sum of its proper divisors (1).

221001012227 is an equidigital number, since it uses as much as digits as its factorization.

221001012227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 221001012227 its reverse (722210100122), we get a palindrome (943211112349).

The spelling of 221001012227 in words is "two hundred twenty-one billion, one million, twelve thousand, two hundred twenty-seven".