213122231227 has 2 divisors, whose sum is σ = 213122231228. Its totient is φ = 213122231226.

The previous prime is 213122231219. The next prime is 213122231249. The reversal of 213122231227 is 722132221312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213122231227 - 2³ = 213122231219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213122231195 and 213122231204.

It is not a weakly prime, because it can be changed into another prime (213122231327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561115613 + 106561115614.

It is an arithmetic number, because the mean of its divisors is an integer number (106561115614).

Almost surely, 2^213122231227 is an apocalyptic number.

213122231227 is a deficient number, since it is larger than the sum of its proper divisors (1).

213122231227 is an equidigital number, since it uses as much as digits as its factorization.

213122231227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

Adding to 213122231227 its reverse (722132221312), we get a palindrome (935254452539).

The spelling of 213122231227 in words is "two hundred thirteen billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred twenty-seven".