1212210112 has 28 divisors (see below), whose sum is σ = 2483079616. Its totient is φ = 586552320.

The previous prime is 1212210091. The next prime is 1212210137. The reversal of 1212210112 is 2110122121.

It is a junction number, because it is equal to n+sod(n) for n = 1212210092 and 1212210101.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 303513 + ... + 307480.

Almost surely, 2^1212210112 is an apocalyptic number.

It is an amenable number.

1212210112 is an abundant number, since it is smaller than the sum of its proper divisors (1270869504).

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

1212210112 is an equidigital number, since it uses as much as digits as its factorization.

1212210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611036 (or 611026 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1212210112 is about 34816.8078950383. The cubic root of 1212210112 is about 1066.2506301137.

Adding to 1212210112 its reverse (2110122121), we get a palindrome (3322332233).

The spelling of 1212210112 in words is "one billion, two hundred twelve million, two hundred ten thousand, one hundred twelve".