1222212212012 has 18 divisors (see below), whose sum is σ = 2350990846764. Its totient is φ = 555551005240.

The previous prime is 1222212211951. The next prime is 1222212212041. The reversal of 1222212212012 is 2102122122221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1262615438 + ... + 1262616405.

It is an arithmetic number, because the mean of its divisors is an integer number (130610602598).

Almost surely, 2^{1222212212012} is an apocalyptic number.

It is an amenable number.

1222212212012 is a deficient number, since it is larger than the sum of its proper divisors (1128778634752).

1222212212012 is a wasteful number, since it uses less digits than its factorization.

1222212212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525231869 (or 2525231856 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1222212212012 its reverse (2102122122221), we get a palindrome (3324334334233).

The spelling of 1222212212012 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, two hundred twelve thousand, twelve".