1223123313300 has 144 divisors (see below), whose sum is σ = 4049287495680. Its totient is φ = 279237421440.

The previous prime is 1223123313287. The next prime is 1223123313311. The reversal of 1223123313300 is 33133213221.

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 47 ways as a sum of consecutive naturals, for example, 1414797 + ... + 2109003.

Almost surely, 2^{1223123313300} is an apocalyptic number.

1223123313300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223123313300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2024643747840).

1223123313300 is an abundant number, since it is smaller than the sum of its proper divisors (2826164182380).

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

1223123313300 is a wasteful number, since it uses less digits than its factorization.

1223123313300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695070 (or 695063 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1223123313300 its reverse (33133213221), we get a palindrome (1256256526521).

The spelling of 1223123313300 in words is "one trillion, two hundred twenty-three billion, one hundred twenty-three million, three hundred thirteen thousand, three hundred".