1243333221140 has 48 divisors (see below), whose sum is σ = 2660668955280. Its totient is φ = 487875348480.

The previous prime is 1243333221133. The next prime is 1243333221157. The reversal of 1243333221140 is 411223333421.

It can be written as a sum of positive squares in 8 ways, for example, as 36494753296 + 1206838467844 = 191036^2 + 1098562^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7152860 + ... + 7324620.

It is an arithmetic number, because the mean of its divisors is an integer number (55430603235).

Almost surely, 2^{1243333221140} is an apocalyptic number.

1243333221140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243333221140 is an abundant number, since it is smaller than the sum of its proper divisors (1417335734140).

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

1243333221140 is a wasteful number, since it uses less digits than its factorization.

1243333221140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178652 (or 178650 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 1243333221140 its reverse (411223333421), we get a palindrome (1654556554561).

The spelling of 1243333221140 in words is "one trillion, two hundred forty-three billion, three hundred thirty-three million, two hundred twenty-one thousand, one hundred forty".