30100000212 has 36 divisors (see below), whose sum is σ = 76155823380. Its totient is φ = 10024140672.

The previous prime is 30100000211. The next prime is 30100000237. The reversal of 30100000212 is 21200000103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24610079376 + 5489920836 = 156876^2 + 74094^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 30100000194 and 30100000203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30100000211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343137 + ... + 421832.

Almost surely, 2^30100000212 is an apocalyptic number.

It is an amenable number.

30100000212 is an abundant number, since it is smaller than the sum of its proper divisors (46055823168).

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

30100000212 is a wasteful number, since it uses less digits than its factorization.

30100000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766072 (or 766067 counting only the distinct ones).

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

Adding to 30100000212 its reverse (21200000103), we get a palindrome (51300000315).

The spelling of 30100000212 in words is "thirty billion, one hundred million, two hundred twelve", and thus it is an aban number.