1123020323220 has 48 divisors (see below), whose sum is σ = 3182341942080. Its totient is φ = 295863987456.

The previous prime is 1123020323189. The next prime is 1123020323279. The reversal of 1123020323220 is 223230203211.

It is a happy number.

It is a super-2 number, since 2×1123020323220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112748065 + ... + 112758024.

It is an arithmetic number, because the mean of its divisors is an integer number (66298790460).

Almost surely, 2^{1123020323220} is an apocalyptic number.

1123020323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123020323220 is an abundant number, since it is smaller than the sum of its proper divisors (2059321618860).

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

1123020323220 is a wasteful number, since it uses less digits than its factorization.

1123020323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225506184 (or 225506182 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1123020323220 its reverse (223230203211), we get a palindrome (1346250526431).

The spelling of 1123020323220 in words is "one trillion, one hundred twenty-three billion, twenty million, three hundred twenty-three thousand, two hundred twenty".