1212196308 has 12 divisors (see below), whose sum is σ = 2828458080. Its totient is φ = 404065432.

The previous prime is 1212196261. The next prime is 1212196309. The reversal of 1212196308 is 8036912121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212196309) 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 3 ways as a sum of consecutive naturals, for example, 50508168 + ... + 50508191.

It is an arithmetic number, because the mean of its divisors is an integer number (235704840).

Almost surely, 2^1212196308 is an apocalyptic number.

It is an amenable number.

1212196308 is an abundant number, since it is smaller than the sum of its proper divisors (1616261772).

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

1212196308 is a wasteful number, since it uses less digits than its factorization.

1212196308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101016366 (or 101016364 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1212196308 is about 34816.6096568865. The cubic root of 1212196308 is about 1066.2465828012.

The spelling of 1212196308 in words is "one billion, two hundred twelve million, one hundred ninety-six thousand, three hundred eight".