1212212011212 has 24 divisors (see below), whose sum is σ = 3142771881200. Its totient is φ = 404070670368.

The previous prime is 1212212011093. The next prime is 1212212011217. The reversal of 1212212011212 is 2121102122121.

1212212011212 is a `hidden beast` number, since 121 + 221 + 201 + 121 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1212212011217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5612092537 + ... + 5612092752.

Almost surely, 2^{1212212011212} is an apocalyptic number.

1212212011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212212011212 is an abundant number, since it is smaller than the sum of its proper divisors (1930559869988).

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

1212212011212 is a wasteful number, since it uses less digits than its factorization.

1212212011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11224185302 (or 11224185294 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1212212011212 its reverse (2121102122121), we get a palindrome (3333314133333).

The spelling of 1212212011212 in words is "one trillion, two hundred twelve billion, two hundred twelve million, eleven thousand, two hundred twelve".