21130010002000 has 320 divisors, whose sum is σ = 52486584643584. Its totient is φ = 8224238131200.

The previous prime is 21130010001983. The next prime is 21130010002019. The reversal of 21130010002000 is 20001003112.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9860012929 + ... + 9860015071.

Almost surely, 2^{21130010002000} is an apocalyptic number.

21130010002000 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 21130010002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26243292321792).

21130010002000 is an abundant number, since it is smaller than the sum of its proper divisors (31356574641584).

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

21130010002000 is a wasteful number, since it uses less digits than its factorization.

21130010002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943 (or 2927 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21130010002000 its reverse (20001003112), we get a palindrome (21150011005112).

The spelling of 21130010002000 in words is "twenty-one trillion, one hundred thirty billion, ten million, two thousand".