21034121114424 has 64 divisors (see below), whose sum is σ = 57429033344640. Its totient is φ = 6366948485760.

The previous prime is 21034121114401. The next prime is 21034121114453. The reversal of 21034121114424 is 42441112143012.

It is a junction number, because it is equal to n+sod(n) for n = 21034121114391 and 21034121114400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43682659 + ... + 44161554.

It is an arithmetic number, because the mean of its divisors is an integer number (897328646010).

Almost surely, 2^{21034121114424} is an apocalyptic number.

21034121114424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21034121114424 is an abundant number, since it is smaller than the sum of its proper divisors (36394912230216).

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

21034121114424 is a wasteful number, since it uses less digits than its factorization.

21034121114424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87845140 (or 87845136 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

Adding to 21034121114424 its reverse (42441112143012), we get a palindrome (63475233257436).

The spelling of 21034121114424 in words is "twenty-one trillion, thirty-four billion, one hundred twenty-one million, one hundred fourteen thousand, four hundred twenty-four".