21141104 has 10 divisors (see below), whose sum is σ = 40960920. Its totient is φ = 10570544.

The previous prime is 21141103. The next prime is 21141137. The reversal of 21141104 is 40114112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21141103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660644 + ... + 660675.

It is an arithmetic number, because the mean of its divisors is an integer number (4096092).

Almost surely, 2^21141104 is an apocalyptic number.

It is an amenable number.

21141104 is a deficient number, since it is larger than the sum of its proper divisors (19819816).

21141104 is a wasteful number, since it uses less digits than its factorization.

21141104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321327 (or 1321321 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 21141104 is about 4597.9456282127. The cubic root of 21141104 is about 276.5089677251.

Adding to 21141104 its reverse (40114112), we get a palindrome (61255216).

The spelling of 21141104 in words is "twenty-one million, one hundred forty-one thousand, one hundred four".