1220433455 has 4 divisors (see below), whose sum is σ = 1464520152. Its totient is φ = 976346760.

The previous prime is 1220433373. The next prime is 1220433457. The reversal of 1220433455 is 5543340221.

It is a happy number.

1220433455 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5543340221 = 59 ⋅93954919.

It is not a de Polignac number, because 1220433455 - 2¹⁶ = 1220367919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220433457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122043341 + ... + 122043350.

It is an arithmetic number, because the mean of its divisors is an integer number (366130038).

Almost surely, 2^1220433455 is an apocalyptic number.

1220433455 is a deficient number, since it is larger than the sum of its proper divisors (244086697).

1220433455 is an equidigital number, since it uses as much as digits as its factorization.

1220433455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244086696.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1220433455 is about 34934.7027323835. The cubic root of 1220433455 is about 1068.6562614912.

Adding to 1220433455 its reverse (5543340221), we get a palindrome (6763773676).

The spelling of 1220433455 in words is "one billion, two hundred twenty million, four hundred thirty-three thousand, four hundred fifty-five".