21242223041 has 32 divisors (see below), whose sum is σ = 25241758080. Its totient is φ = 17701286400.

The previous prime is 21242223019. The next prime is 21242223083. The reversal of 21242223041 is 14032224212.

It is a cyclic number.

It is not a de Polignac number, because 21242223041 - 2¹⁸ = 21241960897 is a prime.

It is a Duffinian number.

21242223041 is a modest number, since divided by 223041 gives 21242 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 21242222998 and 21242223016.

It is not an unprimeable number, because it can be changed into a prime (21242223001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411071 + ... + 459851.

It is an arithmetic number, because the mean of its divisors is an integer number (788804940).

Almost surely, 2^21242223041 is an apocalyptic number.

It is an amenable number.

21242223041 is a deficient number, since it is larger than the sum of its proper divisors (3999535039).

21242223041 is a wasteful number, since it uses less digits than its factorization.

21242223041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48897.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21242223041 its reverse (14032224212), we get a palindrome (35274447253).

The spelling of 21242223041 in words is "twenty-one billion, two hundred forty-two million, two hundred twenty-three thousand, forty-one".