20211014 has 4 divisors (see below), whose sum is σ = 30316524. Its totient is φ = 10105506.

The previous prime is 20211007. The next prime is 20211031. The reversal of 20211014 is 41011202.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20210986 and 20211004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5052752 + ... + 5052755.

It is an arithmetic number, because the mean of its divisors is an integer number (7579131).

Almost surely, 2^20211014 is an apocalyptic number.

20211014 is a deficient number, since it is larger than the sum of its proper divisors (10105510).

20211014 is a wasteful number, since it uses less digits than its factorization.

20211014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105509.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 20211014 is about 4495.6661352907. Note that the first 3 decimals coincide. The cubic root of 20211014 is about 272.3930573822.

Adding to 20211014 its reverse (41011202), we get a palindrome (61222216).

The spelling of 20211014 in words is "twenty million, two hundred eleven thousand, fourteen".