21130030333 has 16 divisors (see below), whose sum is σ = 22283786880. Its totient is φ = 19996358976.

The previous prime is 21130030309. The next prime is 21130030351. The reversal of 21130030333 is 33303003112.

It is not a de Polignac number, because 21130030333 - 2²¹ = 21127933181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21130030333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130031333) 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, 2034991 + ... + 2045347.

It is an arithmetic number, because the mean of its divisors is an integer number (1392736680).

Almost surely, 2^21130030333 is an apocalyptic number.

21130030333 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21130030333 is a deficient number, since it is larger than the sum of its proper divisors (1153756547).

21130030333 is a wasteful number, since it uses less digits than its factorization.

21130030333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11316.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 21130030333 its reverse (33303003112), we get a palindrome (54433033445).

The spelling of 21130030333 in words is "twenty-one billion, one hundred thirty million, thirty thousand, three hundred thirty-three".