21030300303012 has 576 divisors, whose sum is σ = 75092747079168. Its totient is φ = 4786283520000.

The previous prime is 21030300302929. The next prime is 21030300303017.

21030300303012 is a `hidden beast` number, since 2 + 1 + 0 + 30 + 300 + 30 + 301 + 2 = 666.

21030300303012 is nontrivially palindromic in base 10.

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

It is not an unprimeable number, because it can be changed into a prime (21030300303017) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 54474262 + ... + 54858962.

It is an arithmetic number, because the mean of its divisors is an integer number (130369352568).

Almost surely, 2^{21030300303012} is an apocalyptic number.

21030300303012 is a gapful number since it is divisible by the number (22) 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 21030300303012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37546373539584).

21030300303012 is an abundant number, since it is smaller than the sum of its proper divisors (54062446776156).

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

21030300303012 is a wasteful number, since it uses less digits than its factorization.

21030300303012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384820 (or 384815 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

It can be divided in two parts, 21030300 and 303012, that added together give a palindrome (21333312).

The spelling of 21030300303012 in words is "twenty-one trillion, thirty billion, three hundred million, three hundred three thousand, twelve".