1212212002212 has 18 divisors (see below), whose sum is σ = 3064202561238. Its totient is φ = 404070667392.

The previous prime is 1212212002207. The next prime is 1212212002223. The reversal of 1212212002212 is 2122002122121.

It is a happy number.

1212212002212 is a `hidden beast` number, since 1 + 21 + 221 + 200 + 221 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 654167145636 + 558044856576 = 808806^2 + 747024^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16836277773 + ... + 16836277844.

Almost surely, 2^{1212212002212} is an apocalyptic number.

1212212002212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212212002212 is an abundant number, since it is smaller than the sum of its proper divisors (1851990559026).

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

1212212002212 is a wasteful number, since it uses less digits than its factorization.

1212212002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33672555627 (or 33672555622 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1212212002212 its reverse (2122002122121), we get a palindrome (3334214124333).

The spelling of 1212212002212 in words is "one trillion, two hundred twelve billion, two hundred twelve million, two thousand, two hundred twelve".