1220231227 has 2 divisors, whose sum is σ = 1220231228. Its totient is φ = 1220231226.

The previous prime is 1220231171. The next prime is 1220231261. The reversal of 1220231227 is 7221320221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220231227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220231198 and 1220231207.

It is not a weakly prime, because it can be changed into another prime (1220231267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610115613 + 610115614.

It is an arithmetic number, because the mean of its divisors is an integer number (610115614).

Almost surely, 2^1220231227 is an apocalyptic number.

1220231227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220231227 is an equidigital number, since it uses as much as digits as its factorization.

1220231227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1220231227 is about 34931.8082412005. The cubic root of 1220231227 is about 1068.5972321479.

Adding to 1220231227 its reverse (7221320221), we get a palindrome (8441551448).

The spelling of 1220231227 in words is "one billion, two hundred twenty million, two hundred thirty-one thousand, two hundred twenty-seven".