1220020330 has 16 divisors (see below), whose sum is σ = 2196440064. Its totient is φ = 487918480.

The previous prime is 1220020327. The next prime is 1220020339. The reversal of 1220020330 is 330200221.

It is a happy number.

It is a super-2 number, since 2×1220020330² = 2976899211226617800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220020330.

It is not an unprimeable number, because it can be changed into a prime (1220020339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86559 + ... + 99661.

It is an arithmetic number, because the mean of its divisors is an integer number (137277504).

Almost surely, 2^1220020330 is an apocalyptic number.

1220020330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220020330 is a deficient number, since it is larger than the sum of its proper divisors (976419734).

1220020330 is a wasteful number, since it uses less digits than its factorization.

1220020330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22421.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1220020330 is about 34928.7894150370. The cubic root of 1220020330 is about 1068.5356654190.

Adding to 1220020330 its reverse (330200221), we get a palindrome (1550220551).

The spelling of 1220020330 in words is "one billion, two hundred twenty million, twenty thousand, three hundred thirty".