21030130231200 has 216 divisors, whose sum is σ = 74891731958316. Its totient is φ = 5552509440000.

The previous prime is 21030130231163. The next prime is 21030130231237. The reversal of 21030130231200 is 213203103012.

21030130231200 is a `hidden beast` number, since 2 + 10 + 301 + 302 + 31 + 20 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (21030130231163) and next prime (21030130231237).

It can be written as a sum of positive squares in 6 ways, for example, as 12643059381264 + 8387070849936 = 3555708^2 + 2896044^2 .

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 (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13732461 + ... + 15186860.

Almost surely, 2^{21030130231200} is an apocalyptic number.

21030130231200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030130231200 is an abundant number, since it is smaller than the sum of its proper divisors (53861601727116).

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

21030130231200 is a wasteful number, since it uses less digits than its factorization.

21030130231200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28919448 (or 28919432 counting only the distinct ones).

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

Adding to 21030130231200 its reverse (213203103012), we get a palindrome (21243333334212).

The spelling of 21030130231200 in words is "twenty-one trillion, thirty billion, one hundred thirty million, two hundred thirty-one thousand, two hundred".