21003300106 has 8 divisors (see below), whose sum is σ = 31505775840. Its totient is φ = 10501374828.

The previous prime is 21003300061. The next prime is 21003300173. The reversal of 21003300106 is 60100330012.

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

It is a super-2 number, since 2×21003300106² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21003300106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23196 + ... + 206263.

It is an arithmetic number, because the mean of its divisors is an integer number (3938221980).

Almost surely, 2^21003300106 is an apocalyptic number.

21003300106 is a deficient number, since it is larger than the sum of its proper divisors (10502475734).

21003300106 is a wasteful number, since it uses less digits than its factorization.

21003300106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275228.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21003300106 its reverse (60100330012), we get a palindrome (81103630118).

The spelling of 21003300106 in words is "twenty-one billion, three million, three hundred thousand, one hundred six".