1220265043 has 2 divisors, whose sum is σ = 1220265044. Its totient is φ = 1220265042.

The previous prime is 1220265019. The next prime is 1220265061. The reversal of 1220265043 is 3405620221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220265043 - 2²¹ = 1218167891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220264999 and 1220265017.

It is not a weakly prime, because it can be changed into another prime (1220266043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610132521 + 610132522.

It is an arithmetic number, because the mean of its divisors is an integer number (610132522).

Almost surely, 2^1220265043 is an apocalyptic number.

1220265043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220265043 is an equidigital number, since it uses as much as digits as its factorization.

1220265043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1220265043 is about 34932.2922666120. The cubic root of 1220265043 is about 1068.6071033235.

Adding to 1220265043 its reverse (3405620221), we get a palindrome (4625885264).

The spelling of 1220265043 in words is "one billion, two hundred twenty million, two hundred sixty-five thousand, forty-three".