1223443120020 has 48 divisors (see below), whose sum is σ = 3737062623168. Its totient is φ = 296592271360.

The previous prime is 1223443120019. The next prime is 1223443120033. The reversal of 1223443120020 is 200213443221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 926850189 + ... + 926851508.

It is an arithmetic number, because the mean of its divisors is an integer number (77855471316).

Almost surely, 2^{1223443120020} is an apocalyptic number.

1223443120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223443120020 is an abundant number, since it is smaller than the sum of its proper divisors (2513619503148).

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

1223443120020 is a wasteful number, since it uses less digits than its factorization.

1223443120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853701720 (or 1853701718 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1223443120020 its reverse (200213443221), we get a palindrome (1423656563241).

The spelling of 1223443120020 in words is "one trillion, two hundred twenty-three billion, four hundred forty-three million, one hundred twenty thousand, twenty".