1223300020 has 36 divisors (see below), whose sum is σ = 2624845860. Its totient is φ = 478891648.

The previous prime is 1223299993. The next prime is 1223300027. The reversal of 1223300020 is 200033221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 243484816 + 979815204 = 15604^2 + 31302^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223300027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30336 + ... + 58024.

It is an arithmetic number, because the mean of its divisors is an integer number (72912385).

Almost surely, 2^1223300020 is an apocalyptic number.

1223300020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223300020 is an abundant number, since it is smaller than the sum of its proper divisors (1401545840).

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

1223300020 is a wasteful number, since it uses less digits than its factorization.

1223300020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27792 (or 27743 counting only the distinct ones).

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

The square root of 1223300020 is about 34975.7061401196. The cubic root of 1223300020 is about 1069.4922970606.

Adding to 1223300020 its reverse (200033221), we get a palindrome (1423333241).

The spelling of 1223300020 in words is "one billion, two hundred twenty-three million, three hundred thousand, twenty".