1220324355 has 12 divisors (see below), whose sum is σ = 2115228960. Its totient is φ = 650839632.

The previous prime is 1220324351. The next prime is 1220324359. The reversal of 1220324355 is 5534230221.

It is a happy number.

1220324355 is a `hidden beast` number, since 1 + 220 + 3 + 2 + 435 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1220324351) and next prime (1220324359).

It is not a de Polignac number, because 1220324355 - 2² = 1220324351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220324351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13559115 + ... + 13559204.

It is an arithmetic number, because the mean of its divisors is an integer number (176269080).

Almost surely, 2^1220324355 is an apocalyptic number.

1220324355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220324355 is a deficient number, since it is larger than the sum of its proper divisors (894904605).

1220324355 is a wasteful number, since it uses less digits than its factorization.

1220324355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27118330 (or 27118327 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1220324355 is about 34933.1412128941. The cubic root of 1220324355 is about 1068.6244165561.

Adding to 1220324355 its reverse (5534230221), we get a palindrome (6754554576).

The spelling of 1220324355 in words is "one billion, two hundred twenty million, three hundred twenty-four thousand, three hundred fifty-five".