213555227 has 2 divisors, whose sum is σ = 213555228. Its totient is φ = 213555226.

The previous prime is 213555191. The next prime is 213555229. The reversal of 213555227 is 722555312.

213555227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213555227 - 2⁶ = 213555163 is a prime.

Together with 213555229, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 213555193 and 213555202.

It is not a weakly prime, because it can be changed into another prime (213555229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106777613 + 106777614.

It is an arithmetic number, because the mean of its divisors is an integer number (106777614).

Almost surely, 2^213555227 is an apocalyptic number.

213555227 is a deficient number, since it is larger than the sum of its proper divisors (1).

213555227 is an equidigital number, since it uses as much as digits as its factorization.

213555227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 32.

The square root of 213555227 is about 14613.5289030405. The cubic root of 213555227 is about 597.7277267835.

The spelling of 213555227 in words is "two hundred thirteen million, five hundred fifty-five thousand, two hundred twenty-seven".