21130330123311 has 16 divisors (see below), whose sum is σ = 29659259360640. Its totient is φ = 13344276601440.

The previous prime is 21130330123229. The next prime is 21130330123333. The reversal of 21130330123311 is 11332103303112.

It is not a de Polignac number, because 21130330123311 - 2⁷ = 21130330123183 is a prime.

It is a super-2 number, since 2×21130330123311² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130330123361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15955660 + ... + 17229153.

It is an arithmetic number, because the mean of its divisors is an integer number (1853703710040).

Almost surely, 2^{21130330123311} is an apocalyptic number.

21130330123311 is a deficient number, since it is larger than the sum of its proper divisors (8528929237329).

21130330123311 is a wasteful number, since it uses less digits than its factorization.

21130330123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33196006.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21130330123311 its reverse (11332103303112), we get a palindrome (32462433426423).

The spelling of 21130330123311 in words is "twenty-one trillion, one hundred thirty billion, three hundred thirty million, one hundred twenty-three thousand, three hundred eleven".