1220266043 has 2 divisors, whose sum is σ = 1220266044. Its totient is φ = 1220266042.

The previous prime is 1220266037. The next prime is 1220266049. The reversal of 1220266043 is 3406620221.

It is a balanced prime because it is at equal distance from previous prime (1220266037) and next prime (1220266049).

It is a cyclic number.

It is not a de Polignac number, because 1220266043 - 2⁴ = 1220266027 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220266049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610133021 + 610133022.

It is an arithmetic number, because the mean of its divisors is an integer number (610133022).

Almost surely, 2^1220266043 is an apocalyptic number.

1220266043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220266043 is an equidigital number, since it uses as much as digits as its factorization.

1220266043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1220266043 is about 34932.3065800127. The cubic root of 1220266043 is about 1068.6073952291.

Adding to 1220266043 its reverse (3406620221), we get a palindrome (4626886264).

The spelling of 1220266043 in words is "one billion, two hundred twenty million, two hundred sixty-six thousand, forty-three".