1212222001112 has 32 divisors (see below), whose sum is σ = 2408442141600. Its totient is φ = 570024835584.

The previous prime is 1212222001103. The next prime is 1212222001139. The reversal of 1212222001112 is 2111002222121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3199463 + ... + 3558230.

It is an arithmetic number, because the mean of its divisors is an integer number (75263816925).

Almost surely, 2^{1212222001112} is an apocalyptic number.

It is an amenable number.

1212222001112 is a deficient number, since it is larger than the sum of its proper divisors (1196220140488).

1212222001112 is a wasteful number, since it uses less digits than its factorization.

1212222001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6759035 (or 6759031 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212222001112 its reverse (2111002222121), we get a palindrome (3323224223233).

The spelling of 1212222001112 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, one thousand, one hundred twelve".