1230105212 has 18 divisors (see below), whose sum is σ = 2504143152. Its totient is φ = 527187864.

The previous prime is 1230105187. The next prime is 1230105259. The reversal of 1230105212 is 2125010321.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3137828 + ... + 3138219.

It is an arithmetic number, because the mean of its divisors is an integer number (139119064).

Almost surely, 2^1230105212 is an apocalyptic number.

It is an amenable number.

1230105212 is an abundant number, since it is smaller than the sum of its proper divisors (1274037940).

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

1230105212 is a wasteful number, since it uses less digits than its factorization.

1230105212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276065 (or 6276056 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1230105212 is about 35072.8557719499. The cubic root of 1230105212 is about 1071.4718185430.

Adding to 1230105212 its reverse (2125010321), we get a palindrome (3355115533).

The spelling of 1230105212 in words is "one billion, two hundred thirty million, one hundred five thousand, two hundred twelve".