21141124043 has 4 divisors (see below), whose sum is σ = 22767364368. Its totient is φ = 19514883720.

The previous prime is 21141124013. The next prime is 21141124057. The reversal of 21141124043 is 34042114112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21141124043 - 2¹⁰ = 21141123019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21141124013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813120143 + ... + 813120168.

It is an arithmetic number, because the mean of its divisors is an integer number (5691841092).

Almost surely, 2^21141124043 is an apocalyptic number.

21141124043 is a deficient number, since it is larger than the sum of its proper divisors (1626240325).

21141124043 is a wasteful number, since it uses less digits than its factorization.

21141124043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626240324.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21141124043 its reverse (34042114112), we get a palindrome (55183238155).

The spelling of 21141124043 in words is "twenty-one billion, one hundred forty-one million, one hundred twenty-four thousand, forty-three".