21130411213 has 16 divisors (see below), whose sum is σ = 22171032576. Its totient is φ = 20100263040.

The previous prime is 21130411193. The next prime is 21130411261. The reversal of 21130411213 is 31211403112.

It is a de Polignac number, because none of the positive numbers 2^k-21130411213 is a prime.

It is a super-2 number, since 2×21130411213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130411013) 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, 3315556 + ... + 3321922.

It is an arithmetic number, because the mean of its divisors is an integer number (1385689536).

Almost surely, 2^21130411213 is an apocalyptic number.

21130411213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21130411213 is a deficient number, since it is larger than the sum of its proper divisors (1040621363).

21130411213 is a wasteful number, since it uses less digits than its factorization.

21130411213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21130411213 its reverse (31211403112), we get a palindrome (52341814325).

The spelling of 21130411213 in words is "twenty-one billion, one hundred thirty million, four hundred eleven thousand, two hundred thirteen".