21113030241 has 8 divisors (see below), whose sum is σ = 31278563360. Its totient is φ = 14075353476.

The previous prime is 21113030231. The next prime is 21113030249. The reversal of 21113030241 is 14203031112.

It is not a de Polignac number, because 21113030241 - 2⁵ = 21113030209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21113030249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390982015 + ... + 390982068.

It is an arithmetic number, because the mean of its divisors is an integer number (3909820420).

Almost surely, 2^21113030241 is an apocalyptic number.

It is an amenable number.

21113030241 is a deficient number, since it is larger than the sum of its proper divisors (10165533119).

21113030241 is an equidigital number, since it uses as much as digits as its factorization.

21113030241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781964092 (or 781964086 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21113030241 its reverse (14203031112), we get a palindrome (35316061353).

The spelling of 21113030241 in words is "twenty-one billion, one hundred thirteen million, thirty thousand, two hundred forty-one".