21113310441 has 8 divisors (see below), whose sum is σ = 28155013344. Its totient is φ = 14073573920.

The previous prime is 21113310433. The next prime is 21113310443. The reversal of 21113310441 is 14401331112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21113310441 - 2³ = 21113310433 is a prime.

It is a super-2 number, since 2×21113310441² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21113310443) 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 7 ways as a sum of consecutive naturals, for example, 466356 + ... + 509621.

It is an arithmetic number, because the mean of its divisors is an integer number (3519376668).

Almost surely, 2^21113310441 is an apocalyptic number.

It is an amenable number.

21113310441 is a deficient number, since it is larger than the sum of its proper divisors (7041702903).

21113310441 is an equidigital number, since it uses as much as digits as its factorization.

21113310441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983191.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21113310441 its reverse (14401331112), we get a palindrome (35514641553).

The spelling of 21113310441 in words is "twenty-one billion, one hundred thirteen million, three hundred ten thousand, four hundred forty-one".