1321101103140 has 288 divisors, whose sum is σ = 5065413400320. Its totient is φ = 271204236288.

The previous prime is 1321101103121. The next prime is 1321101103169. The reversal of 1321101103140 is 413011011231.

It is a happy number.

1321101103140 is a `hidden beast` number, since 1 + 321 + 101 + 103 + 140 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 483850 + ... + 1695969.

Almost surely, 2^{1321101103140} is an apocalyptic number.

1321101103140 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 1321101103140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2532706700160).

1321101103140 is an abundant number, since it is smaller than the sum of its proper divisors (3744312297180).

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

1321101103140 is a wasteful number, since it uses less digits than its factorization.

1321101103140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179891 (or 2179886 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1321101103140 its reverse (413011011231), we get a palindrome (1734112114371).

It can be divided in two parts, 1321101 and 103140, that added together give a palindrome (1424241).

The spelling of 1321101103140 in words is "one trillion, three hundred twenty-one billion, one hundred one million, one hundred three thousand, one hundred forty".