30000100212 has 18 divisors (see below), whose sum is σ = 75833586738. Its totient is φ = 10000033392.

The previous prime is 30000100199. The next prime is 30000100213. The reversal of 30000100212 is 21200100003.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26077082256 + 3923017956 = 161484^2 + 62634^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 30000100194 and 30000100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000100213) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 416668023 + ... + 416668094.

It is an arithmetic number, because the mean of its divisors is an integer number (4212977041).

Almost surely, 2^30000100212 is an apocalyptic number.

It is an amenable number.

30000100212 is an abundant number, since it is smaller than the sum of its proper divisors (45833486526).

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

30000100212 is a wasteful number, since it uses less digits than its factorization.

30000100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833336127 (or 833336122 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 30000100212 its reverse (21200100003), we get a palindrome (51200200215).

The spelling of 30000100212 in words is "thirty billion, one hundred thousand, two hundred twelve".