1212222222012 has 24 divisors (see below), whose sum is σ = 2829302793856. Its totient is φ = 403962034608.

The previous prime is 1212222222011. The next prime is 1212222222047. The reversal of 1212222222012 is 2102222222121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212222222012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212222222011) 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, 13959838 + ... + 14046405.

Almost surely, 2^{1212222222012} is an apocalyptic number.

1212222222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212222222012 is an abundant number, since it is smaller than the sum of its proper divisors (1617080571844).

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

1212222222012 is a wasteful number, since it uses less digits than its factorization.

1212222222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28009857 (or 28009855 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1212222222012 its reverse (2102222222121), we get a palindrome (3314444444133).

The spelling of 1212222222012 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twenty-two thousand, twelve".