21114005304542 has 16 divisors (see below), whose sum is σ = 32121701820000. Its totient is φ = 10406814173280.

The previous prime is 21114005304523. The next prime is 21114005304569. The reversal of 21114005304542 is 24540350041112.

It is a junction number, because it is equal to n+sod(n) for n = 21114005304499 and 21114005304508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9711917 + ... + 11685432.

It is an arithmetic number, because the mean of its divisors is an integer number (2007606363750).

Almost surely, 2^{21114005304542} is an apocalyptic number.

21114005304542 is a deficient number, since it is larger than the sum of its proper divisors (11007696515458).

21114005304542 is a wasteful number, since it uses less digits than its factorization.

21114005304542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21404371.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 21114005304542 its reverse (24540350041112), we get a palindrome (45654355345654).

The spelling of 21114005304542 in words is "twenty-one trillion, one hundred fourteen billion, five million, three hundred four thousand, five hundred forty-two".