21130330011 has 8 divisors (see below), whose sum is σ = 32198598144. Its totient is φ = 12074474280.

The previous prime is 21130330009. The next prime is 21130330063. The reversal of 21130330011 is 11003303112.

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

It is not a de Polignac number, because 21130330011 - 2¹ = 21130330009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21130330511) 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, 503103075 + ... + 503103116.

It is an arithmetic number, because the mean of its divisors is an integer number (4024824768).

Almost surely, 2^21130330011 is an apocalyptic number.

21130330011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21130330011 is a deficient number, since it is larger than the sum of its proper divisors (11068268133).

21130330011 is a wasteful number, since it uses less digits than its factorization.

21130330011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006206201.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21130330011 its reverse (11003303112), we get a palindrome (32133633123).

The spelling of 21130330011 in words is "twenty-one billion, one hundred thirty million, three hundred thirty thousand, eleven".