1223402433440 has 192 divisors, whose sum is σ = 3325108631040. Its totient is φ = 420682429440.

The previous prime is 1223402433433. The next prime is 1223402433443. The reversal of 1223402433440 is 443342043221.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1223402433397 and 1223402433406.

It is not an unprimeable number, because it can be changed into a prime (1223402433443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18258239 + ... + 18325121.

It is an arithmetic number, because the mean of its divisors is an integer number (17318274120).

Almost surely, 2^{1223402433440} is an apocalyptic number.

1223402433440 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 1223402433440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1662554315520).

1223402433440 is an abundant number, since it is smaller than the sum of its proper divisors (2101706197600).

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

1223402433440 is a wasteful number, since it uses less digits than its factorization.

1223402433440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67475 (or 67467 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 1223402433440 its reverse (443342043221), we get a palindrome (1666744476661).

The spelling of 1223402433440 in words is "one trillion, two hundred twenty-three billion, four hundred two million, four hundred thirty-three thousand, four hundred forty".