1223323101020 has 12 divisors (see below), whose sum is σ = 2568978512184. Its totient is φ = 489329240400.

The previous prime is 1223323101019. The next prime is 1223323101023. The reversal of 1223323101020 is 201013233221.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 61166155051 = 1223323101020 / (1 + 2 + 2 + 3 + 3 + 2 + 3 + 1 + 0 + 1 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1223323100983 and 1223323101001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223323101023) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 30583077506 + ... + 30583077545.

It is an arithmetic number, because the mean of its divisors is an integer number (214081542682).

Almost surely, 2^{1223323101020} is an apocalyptic number.

1223323101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223323101020 is an abundant number, since it is smaller than the sum of its proper divisors (1345655411164).

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

1223323101020 is a wasteful number, since it uses less digits than its factorization.

1223323101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61166155060 (or 61166155058 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1223323101020 its reverse (201013233221), we get a palindrome (1424336334241).

The spelling of 1223323101020 in words is "one trillion, two hundred twenty-three billion, three hundred twenty-three million, one hundred one thousand, twenty".