1321112233140 has 192 divisors, whose sum is σ = 4323470376960. Its totient is φ = 295193433600.

The previous prime is 1321112233109. The next prime is 1321112233141. The reversal of 1321112233140 is 413322111231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321112233140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321112233141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3154069 + ... + 3548291.

It is an arithmetic number, because the mean of its divisors is an integer number (22518074880).

Almost surely, 2^{1321112233140} is an apocalyptic number.

1321112233140 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 1321112233140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2161735188480).

1321112233140 is an abundant number, since it is smaller than the sum of its proper divisors (3002358143820).

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

1321112233140 is a wasteful number, since it uses less digits than its factorization.

1321112233140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394422 (or 394420 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1321112233140 its reverse (413322111231), we get a palindrome (1734434344371).

The spelling of 1321112233140 in words is "one trillion, three hundred twenty-one billion, one hundred twelve million, two hundred thirty-three thousand, one hundred forty".