21340241013124 has 96 divisors (see below), whose sum is σ = 42658907510016. Its totient is φ = 9246271457280.

The previous prime is 21340241013073. The next prime is 21340241013131. The reversal of 21340241013124 is 42131014204312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21340241013092 and 21340241013101.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1715861034 + ... + 1715873470.

It is an arithmetic number, because the mean of its divisors is an integer number (444363619896).

Almost surely, 2^{21340241013124} is an apocalyptic number.

It is an amenable number.

21340241013124 is a deficient number, since it is larger than the sum of its proper divisors (21318666496892).

21340241013124 is a wasteful number, since it uses less digits than its factorization.

21340241013124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18205 (or 18203 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21340241013124 its reverse (42131014204312), we get a palindrome (63471255217436).

The spelling of 21340241013124 in words is "twenty-one trillion, three hundred forty billion, two hundred forty-one million, thirteen thousand, one hundred twenty-four".