1223243412120 has 320 divisors, whose sum is σ = 4285629168480. Its totient is φ = 312642975744.

The previous prime is 1223243412067. The next prime is 1223243412121. The reversal of 1223243412120 is 212143423221.

1223243412120 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 243 + 412 + 1 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223243412121) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7955812 + ... + 8108108.

Almost surely, 2^{1223243412120} is an apocalyptic number.

1223243412120 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 1223243412120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2142814584240).

1223243412120 is an abundant number, since it is smaller than the sum of its proper divisors (3062385756360).

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

1223243412120 is a wasteful number, since it uses less digits than its factorization.

1223243412120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152424 (or 152411 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1223243412120 its reverse (212143423221), we get a palindrome (1435386835341).

The spelling of 1223243412120 in words is "one trillion, two hundred twenty-three billion, two hundred forty-three million, four hundred twelve thousand, one hundred twenty".