2121024331140 has 384 divisors, whose sum is σ = 7309661958144. Its totient is φ = 452179200000.

The previous prime is 2121024331109. The next prime is 2121024331141. The reversal of 2121024331140 is 411334201212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121024331140.

It is not an unprimeable number, because it can be changed into a prime (2121024331141) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 49510930 + ... + 49553750.

It is an arithmetic number, because the mean of its divisors is an integer number (19035578016).

Almost surely, 2^{2121024331140} is an apocalyptic number.

2121024331140 is a gapful number since it is divisible by the number (20) 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 2121024331140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3654830979072).

2121024331140 is an abundant number, since it is smaller than the sum of its proper divisors (5188637627004).

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

2121024331140 is a wasteful number, since it uses less digits than its factorization.

2121024331140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43131 (or 43129 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 2121024331140 its reverse (411334201212), we get a palindrome (2532358532352).

The spelling of 2121024331140 in words is "two trillion, one hundred twenty-one billion, twenty-four million, three hundred thirty-one thousand, one hundred forty".