2121342010140 has 48 divisors (see below), whose sum is σ = 5939824947840. Its totient is φ = 565684791360.

The previous prime is 2121342010127. The next prime is 2121342010163. The reversal of 2121342010140 is 410102431212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7735491 + ... + 8005029.

It is an arithmetic number, because the mean of its divisors is an integer number (123746353080).

Almost surely, 2^{2121342010140} is an apocalyptic number.

2121342010140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121342010140 is an abundant number, since it is smaller than the sum of its proper divisors (3818482937700).

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

2121342010140 is a wasteful number, since it uses less digits than its factorization.

2121342010140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400722 (or 400720 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2121342010140 its reverse (410102431212), we get a palindrome (2531444441352).

The spelling of 2121342010140 in words is "two trillion, one hundred twenty-one billion, three hundred forty-two million, ten thousand, one hundred forty".