20211093 has 16 divisors (see below), whose sum is σ = 34220160. Its totient is φ = 11549088.

The previous prime is 20211077. The next prime is 20211097. The reversal of 20211093 is 39011202.

It is a happy number.

It is not a de Polignac number, because 20211093 - 2⁴ = 20211077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53280 + ... + 53657.

It is an arithmetic number, because the mean of its divisors is an integer number (2138760).

Almost surely, 2^20211093 is an apocalyptic number.

It is an amenable number.

20211093 is a deficient number, since it is larger than the sum of its proper divisors (14009067).

20211093 is a wasteful number, since it uses less digits than its factorization.

20211093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106953 (or 106947 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 20211093 is about 4495.6749215218. The cubic root of 20211093 is about 272.3934122880.

Adding to 20211093 its reverse (39011202), we get a palindrome (59222295).

The spelling of 20211093 in words is "twenty million, two hundred eleven thousand, ninety-three".