20211103 has 8 divisors (see below), whose sum is σ = 22095360. Its totient is φ = 18334680.

The previous prime is 20211097. The next prime is 20211109. The reversal of 20211103 is 30111202.

20211103 is nontrivially palindromic in base 7.

It is an interprime number because it is at equal distance from previous prime (20211097) and next prime (20211109).

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 20211103 - 2¹⁷ = 20080031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20211103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211109) 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, 4338 + ... + 7696.

It is an arithmetic number, because the mean of its divisors is an integer number (2761920).

Almost surely, 2^20211103 is an apocalyptic number.

20211103 is a deficient number, since it is larger than the sum of its proper divisors (1884257).

20211103 is a wasteful number, since it uses less digits than its factorization.

20211103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 20211103 is about 4495.6760337017. The cubic root of 20211103 is about 272.3934572128.

Adding to 20211103 its reverse (30111202), we get a palindrome (50322305).

Subtracting 20211103 from its reverse (30111202), we obtain a palindrome (9900099).

The spelling of 20211103 in words is "twenty million, two hundred eleven thousand, one hundred three".