21141124 has 6 divisors (see below), whose sum is σ = 36996974. Its totient is φ = 10570560.

The previous prime is 21141103. The next prime is 21141137. The reversal of 21141124 is 42114112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16257024 + 4884100 = 4032^2 + 2210^2 .

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21141098 and 21141107.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2642637 + ... + 2642644.

Almost surely, 2^21141124 is an apocalyptic number.

It is an amenable number.

21141124 is a deficient number, since it is larger than the sum of its proper divisors (15855850).

21141124 is a wasteful number, since it uses less digits than its factorization.

21141124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285285 (or 5285283 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 21141124 is about 4597.9478030965. The cubic root of 21141124 is about 276.5090549198.

Adding to 21141124 its reverse (42114112), we get a palindrome (63255236).

It can be divided in two parts, 2114112 and 4, that added together give a square (2114116 = 1454²).

The spelling of 21141124 in words is "twenty-one million, one hundred forty-one thousand, one hundred twenty-four".