1220323022120 has 64 divisors (see below), whose sum is σ = 2896174396800. Its totient is φ = 461488492800.

The previous prime is 1220323022089. The next prime is 1220323022141. The reversal of 1220323022120 is 212203230221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1220323022092 and 1220323022101.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1278431 + ... + 2018670.

It is an arithmetic number, because the mean of its divisors is an integer number (45252724950).

Almost surely, 2^{1220323022120} is an apocalyptic number.

1220323022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220323022120 is an abundant number, since it is smaller than the sum of its proper divisors (1675851374680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220323022120 is a wasteful number, since it uses less digits than its factorization.

1220323022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297618 (or 3297614 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1220323022120 its reverse (212203230221), we get a palindrome (1432526252341).

The spelling of 1220323022120 in words is "one trillion, two hundred twenty billion, three hundred twenty-three million, twenty-two thousand, one hundred twenty".