21120044341 has 24 divisors (see below), whose sum is σ = 23510995200. Its totient is φ = 18955569600.

The previous prime is 21120044329. The next prime is 21120044347. The reversal of 21120044341 is 14344002112.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-21120044341 is a prime.

It is a super-2 number, since 2×21120044341² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120044347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10671090 + ... + 10673068.

It is an arithmetic number, because the mean of its divisors is an integer number (979624800).

Almost surely, 2^21120044341 is an apocalyptic number.

It is an amenable number.

21120044341 is a deficient number, since it is larger than the sum of its proper divisors (2390950859).

21120044341 is a wasteful number, since it uses less digits than its factorization.

21120044341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081 (or 3070 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21120044341 its reverse (14344002112), we get a palindrome (35464046453).

The spelling of 21120044341 in words is "twenty-one billion, one hundred twenty million, forty-four thousand, three hundred forty-one".