1212132102209 has 24 divisors (see below), whose sum is σ = 1433516606208. Its totient is φ = 1021674155040.

The previous prime is 1212132102197. The next prime is 1212132102253. The reversal of 1212132102209 is 9022012312121.

It is not a de Polignac number, because 1212132102209 - 2⁴ = 1212132102193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1212132102289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11986352 + ... + 12087054.

It is an arithmetic number, because the mean of its divisors is an integer number (59729858592).

Almost surely, 2^{1212132102209} is an apocalyptic number.

It is an amenable number.

1212132102209 is a deficient number, since it is larger than the sum of its proper divisors (221384503999).

1212132102209 is a wasteful number, since it uses less digits than its factorization.

1212132102209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104805 (or 104798 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 1212132102209 in words is "one trillion, two hundred twelve billion, one hundred thirty-two million, one hundred two thousand, two hundred nine".