1210212 has 18 divisors (see below), whose sum is σ = 3059238. Its totient is φ = 403392.

The previous prime is 1210211. The next prime is 1210229. The reversal of 1210212 is 2120121.

It can be written as a sum of positive squares in only one way, i.e., 820836 + 389376 = 906^2 + 624^2 .

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

It is a super-2 number, since 2×1210212² = 2929226169888, which contains 22 as substring.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1210194 and 1210203.

It is not an unprimeable number, because it can be changed into a prime (1210211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16773 + ... + 16844.

2^1210212 is an apocalyptic number.

1210212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1210212 is an abundant number, since it is smaller than the sum of its proper divisors (1849026).

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

1210212 is a wasteful number, since it uses less digits than its factorization.

1210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33627 (or 33622 counting only the distinct ones).

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

The square root of 1210212 is about 1100.0963594158. The cubic root of 1210212 is about 106.5664466651.

Adding to 1210212 its reverse (2120121), we get a palindrome (3330333).

Subtracting 1210212 from its reverse (2120121), we obtain a palindrome (909909).

The spelling of 1210212 in words is "one million, two hundred ten thousand, two hundred twelve".