1212011111212 has 48 divisors (see below), whose sum is σ = 2337149394720. Its totient is φ = 545366016000.

The previous prime is 1212011111209. The next prime is 1212011111231. The reversal of 1212011111212 is 2121111102121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30328108 + ... + 30368044.

It is an arithmetic number, because the mean of its divisors is an integer number (48690612390).

Almost surely, 2^{1212011111212} is an apocalyptic number.

It is an amenable number.

1212011111212 is a deficient number, since it is larger than the sum of its proper divisors (1125138283508).

1212011111212 is a wasteful number, since it uses less digits than its factorization.

1212011111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46882 (or 46880 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 1212011111212 its reverse (2121111102121), we get a palindrome (3333122213333).

Subtracting 1212011111212 from its reverse (2121111102121), we obtain a palindrome (909099990909).

The spelling of 1212011111212 in words is "one trillion, two hundred twelve billion, eleven million, one hundred eleven thousand, two hundred twelve".