21096130000 has 100 divisors (see below), whose sum is σ = 55719389088. Its totient is φ = 7671280000.

The previous prime is 21096129979. The next prime is 21096130001. The reversal of 21096130000 is 3169012.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21096130001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14109 + ... + 205891.

Almost surely, 2^21096130000 is an apocalyptic number.

21096130000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21096130000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27859694544).

21096130000 is an abundant number, since it is smaller than the sum of its proper divisors (34623259088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21096130000 is a wasteful number, since it uses less digits than its factorization.

21096130000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191822 (or 191801 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 21096130000 its reverse (3169012), we get a palindrome (21099299012).

The spelling of 21096130000 in words is "twenty-one billion, ninety-six million, one hundred thirty thousand".