1212166712 has 64 divisors (see below), whose sum is σ = 2485555200. Its totient is φ = 552078720.

The previous prime is 1212166687. The next prime is 1212166717. The reversal of 1212166712 is 2176612121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212166717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814433 + ... + 815919.

It is an arithmetic number, because the mean of its divisors is an integer number (38836800).

Almost surely, 2^1212166712 is an apocalyptic number.

It is an amenable number.

1212166712 is an abundant number, since it is smaller than the sum of its proper divisors (1273388488).

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

1212166712 is a wasteful number, since it uses less digits than its factorization.

1212166712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716 (or 1712 counting only the distinct ones).

The product of its digits is 2016, while the sum is 29.

The square root of 1212166712 is about 34816.1846272678. The cubic root of 1212166712 is about 1066.2379051938.

Adding to 1212166712 its reverse (2176612121), we get a palindrome (3388778833).

The spelling of 1212166712 in words is "one billion, two hundred twelve million, one hundred sixty-six thousand, seven hundred twelve".