1220597227 has 2 divisors, whose sum is σ = 1220597228. Its totient is φ = 1220597226.

The previous prime is 1220597219. The next prime is 1220597239. The reversal of 1220597227 is 7227950221.

It is a weak prime.

It is an emirp because it is prime and its reverse (7227950221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220597227 - 2³ = 1220597219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220597267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610298613 + 610298614.

It is an arithmetic number, because the mean of its divisors is an integer number (610298614).

Almost surely, 2^1220597227 is an apocalyptic number.

1220597227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220597227 is an equidigital number, since it uses as much as digits as its factorization.

1220597227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 1220597227 is about 34937.0466267542. The cubic root of 1220597227 is about 1068.7040609416.

It can be divided in two parts, 122059 and 7227, that added together give a triangular number (129286 = T₅₀₈).

The spelling of 1220597227 in words is "one billion, two hundred twenty million, five hundred ninety-seven thousand, two hundred twenty-seven".