1210000212 has 36 divisors (see below), whose sum is σ = 3092986260. Its totient is φ = 398800512.

The previous prime is 1210000189. The next prime is 1210000219. The reversal of 1210000212 is 2120000121.

It can be written as a sum of positive squares in 2 ways, for example, as 286083396 + 923916816 = 16914^2 + 30396^2 .

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 = 1210000194 and 1210000203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210000219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185623 + ... + 192030.

It is an arithmetic number, because the mean of its divisors is an integer number (85916285).

Almost surely, 2^1210000212 is an apocalyptic number.

1210000212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1210000212 is an abundant number, since it is smaller than the sum of its proper divisors (1882986048).

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

1210000212 is a wasteful number, since it uses less digits than its factorization.

1210000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377752 (or 377747 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1210000212 is about 34785.0573091378. The cubic root of 1210000212 is about 1065.6022990001.

Adding to 1210000212 its reverse (2120000121), we get a palindrome (3330000333).

Subtracting 1210000212 from its reverse (2120000121), we obtain a palindrome (909999909).

The spelling of 1210000212 in words is "one billion, two hundred ten million, two hundred twelve", and thus it is an aban number.