1220445323 has 2 divisors, whose sum is σ = 1220445324. Its totient is φ = 1220445322.

The previous prime is 1220445301. The next prime is 1220445329. The reversal of 1220445323 is 3235440221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220445323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220445292 and 1220445301.

It is not a weakly prime, because it can be changed into another prime (1220445329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610222661 + 610222662.

It is an arithmetic number, because the mean of its divisors is an integer number (610222662).

Almost surely, 2^1220445323 is an apocalyptic number.

1220445323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220445323 is an equidigital number, since it uses as much as digits as its factorization.

1220445323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 1220445323 is about 34934.8725917242. The cubic root of 1220445323 is about 1068.6597254985.

Adding to 1220445323 its reverse (3235440221), we get a palindrome (4455885544).

The spelling of 1220445323 in words is "one billion, two hundred twenty million, four hundred forty-five thousand, three hundred twenty-three".