20211104 has 12 divisors (see below), whose sum is σ = 39790674. Its totient is φ = 10105536.

The previous prime is 20211097. The next prime is 20211109. The reversal of 20211104 is 40111202.

It can be written as a sum of positive squares in only one way, i.e., 18079504 + 2131600 = 4252^2 + 1460^2 .

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 as a sum of consecutive naturals, namely, 315767 + ... + 315830.

Almost surely, 2^20211104 is an apocalyptic number.

It is an amenable number.

20211104 is a deficient number, since it is larger than the sum of its proper divisors (19579570).

20211104 is an equidigital number, since it uses as much as digits as its factorization.

20211104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631607 (or 631599 counting only the distinct ones).

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

The square root of 20211104 is about 4495.6761449197. The cubic root of 20211104 is about 272.3934617052.

Adding to 20211104 its reverse (40111202), we get a palindrome (60322306).

It can be divided in two parts, 2021 and 1104, that added together give a 5-th power (3125 = 5⁵).

The spelling of 20211104 in words is "twenty million, two hundred eleven thousand, one hundred four".