21010221133103 has 8 divisors (see below), whose sum is σ = 21026614832640. Its totient is φ = 20993833831320.

The previous prime is 21010221133091. The next prime is 21010221133147. The reversal of 21010221133103 is 30133112201012.

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 21010221133103 - 2³⁴ = 20993041263919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010221133193) 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, 4981676 + ... + 8175422.

It is an arithmetic number, because the mean of its divisors is an integer number (2628326854080).

Almost surely, 2^{21010221133103} is an apocalyptic number.

21010221133103 is a deficient number, since it is larger than the sum of its proper divisors (16393699537).

21010221133103 is a wasteful number, since it uses less digits than its factorization.

21010221133103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198877.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21010221133103 its reverse (30133112201012), we get a palindrome (51143333334115).

The spelling of 21010221133103 in words is "twenty-one trillion, ten billion, two hundred twenty-one million, one hundred thirty-three thousand, one hundred three".