20211107 has 8 divisors (see below), whose sum is σ = 23311200. Its totient is φ = 17164224.

The previous prime is 20211097. The next prime is 20211109. The reversal of 20211107 is 70111202.

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

It is not a de Polignac number, because 20211107 - 2¹⁰ = 20210083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211091 and 20211100.

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, 12482 + ... + 14007.

It is an arithmetic number, because the mean of its divisors is an integer number (2913900).

Almost surely, 2^20211107 is an apocalyptic number.

20211107 is a deficient number, since it is larger than the sum of its proper divisors (3100093).

20211107 is a wasteful number, since it uses less digits than its factorization.

20211107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26605.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 20211107 is about 4495.6764785736. The cubic root of 20211107 is about 272.3934751827.

Adding to 20211107 its reverse (70111202), we get a palindrome (90322309).

The spelling of 20211107 in words is "twenty million, two hundred eleven thousand, one hundred seven".