21101054353 has 8 divisors (see below), whose sum is σ = 21509841600. Its totient is φ = 20692661808.

The previous prime is 21101054321. The next prime is 21101054369. The reversal of 21101054353 is 35345010112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21101054353 - 2⁵ = 21101054321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101051353) 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, 10438 + ... + 205696.

It is an arithmetic number, because the mean of its divisors is an integer number (2688730200).

Almost surely, 2^21101054353 is an apocalyptic number.

It is an amenable number.

21101054353 is a deficient number, since it is larger than the sum of its proper divisors (408787247).

21101054353 is a wasteful number, since it uses less digits than its factorization.

21101054353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197351.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 21101054353 its reverse (35345010112), we get a palindrome (56446064465).

The spelling of 21101054353 in words is "twenty-one billion, one hundred one million, fifty-four thousand, three hundred fifty-three".