20021110103 has 16 divisors (see below), whose sum is σ = 23084028000. Its totient is φ = 17236058112.

The previous prime is 20021110097. The next prime is 20021110111. The reversal of 20021110103 is 30101112002.

It is a cyclic number.

It is not a de Polignac number, because 20021110103 - 2⁸ = 20021109847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021110163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1059338 + ... + 1078071.

It is an arithmetic number, because the mean of its divisors is an integer number (1442751750).

Almost surely, 2^20021110103 is an apocalyptic number.

20021110103 is a deficient number, since it is larger than the sum of its proper divisors (3062917897).

20021110103 is a wasteful number, since it uses less digits than its factorization.

20021110103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137474.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20021110103 its reverse (30101112002), we get a palindrome (50122222105).

The spelling of 20021110103 in words is "twenty billion, twenty-one million, one hundred ten thousand, one hundred three".