21355100114 has 16 divisors (see below), whose sum is σ = 32479048440. Its totient is φ = 10528819200.

The previous prime is 21355100111. The next prime is 21355100159. The reversal of 21355100114 is 41100155312.

It can be written as a sum of positive squares in 4 ways, for example, as 17021116225 + 4333983889 = 130465^2 + 65833^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21355100114.

It is not an unprimeable number, because it can be changed into a prime (21355100111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716714 + ... + 745914.

Almost surely, 2^21355100114 is an apocalyptic number.

21355100114 is a deficient number, since it is larger than the sum of its proper divisors (11123948326).

21355100114 is a wasteful number, since it uses less digits than its factorization.

21355100114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34285.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 21355100114 its reverse (41100155312), we get a palindrome (62455255426).

The spelling of 21355100114 in words is "twenty-one billion, three hundred fifty-five million, one hundred thousand, one hundred fourteen".