21003303101 has 8 divisors (see below), whose sum is σ = 22967123808. Its totient is φ = 19048554000.

The previous prime is 21003303091. The next prime is 21003303121. The reversal of 21003303101 is 10130330012.

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 21003303101 - 2³⁰ = 19929561277 is a prime.

It is a super-2 number, since 2×21003303101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003303121) 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, 2263055 + ... + 2272316.

It is an arithmetic number, because the mean of its divisors is an integer number (2870890476).

Almost surely, 2^21003303101 is an apocalyptic number.

It is an amenable number.

21003303101 is a deficient number, since it is larger than the sum of its proper divisors (1963820707).

21003303101 is a wasteful number, since it uses less digits than its factorization.

21003303101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535803.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 21003303101 its reverse (10130330012), we get a palindrome (31133633113).

The spelling of 21003303101 in words is "twenty-one billion, three million, three hundred three thousand, one hundred one".