21420433203114 has 128 divisors (see below), whose sum is σ = 47624556476160. Its totient is φ = 6368131123200.

The previous prime is 21420433203109. The next prime is 21420433203131. The reversal of 21420433203114 is 41130233402412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3013139392 + ... + 3013146500.

It is an arithmetic number, because the mean of its divisors is an integer number (372066847470).

Almost surely, 2^{21420433203114} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21420433203114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23812278238080).

21420433203114 is an abundant number, since it is smaller than the sum of its proper divisors (26204123273046).

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

21420433203114 is a wasteful number, since it uses less digits than its factorization.

21420433203114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9016.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 21420433203114 its reverse (41130233402412), we get a palindrome (62550666605526).

The spelling of 21420433203114 in words is "twenty-one trillion, four hundred twenty billion, four hundred thirty-three million, two hundred three thousand, one hundred fourteen".