21012003230130 has 192 divisors, whose sum is σ = 61010855313408. Its totient is φ = 4973140529280.

The previous prime is 21012003230129. The next prime is 21012003230147. The reversal of 21012003230130 is 3103230021012.

21012003230130 is a `hidden beast` number, since 2 + 10 + 1 + 200 + 323 + 0 + 130 = 666.

It is a super-3 number, since 3×21012003230130³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 95 ways as a sum of consecutive naturals, for example, 96397327 + ... + 96615053.

It is an arithmetic number, because the mean of its divisors is an integer number (317764871424).

Almost surely, 2^{21012003230130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21012003230130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30505427656704).

21012003230130 is an abundant number, since it is smaller than the sum of its proper divisors (39998852083278).

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

21012003230130 is a wasteful number, since it uses less digits than its factorization.

21012003230130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220061 (or 220058 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21012003230130 its reverse (3103230021012), we get a palindrome (24115233251142).

The spelling of 21012003230130 in words is "twenty-one trillion, twelve billion, three million, two hundred thirty thousand, one hundred thirty".