1222112212120 has 64 divisors (see below), whose sum is σ = 2767761303840. Its totient is φ = 485647641600.

The previous prime is 1222112212103. The next prime is 1222112212127. The reversal of 1222112212120 is 212122112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222112212127) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9074475 + ... + 9208165.

Almost surely, 2^{1222112212120} is an apocalyptic number.

1222112212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222112212120 is an abundant number, since it is smaller than the sum of its proper divisors (1545649091720).

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

1222112212120 is a wasteful number, since it uses less digits than its factorization.

1222112212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135196 (or 135192 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1222112212120 its reverse (212122112221), we get a palindrome (1434234324341).

The spelling of 1222112212120 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty".