1212200122012 has 24 divisors (see below), whose sum is σ = 2314287626112. Its totient is φ = 550979247600.

The previous prime is 1212200122009. The next prime is 1212200122019. The reversal of 1212200122012 is 2102210022121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212200122019) 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, 689803 + ... + 1703005.

It is an arithmetic number, because the mean of its divisors is an integer number (96428651088).

Almost surely, 2^{1212200122012} is an apocalyptic number.

It is an amenable number.

1212200122012 is a deficient number, since it is larger than the sum of its proper divisors (1102087504100).

1212200122012 is a wasteful number, since it uses less digits than its factorization.

1212200122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040409 (or 1040407 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212200122012 its reverse (2102210022121), we get a palindrome (3314410144133).

The spelling of 1212200122012 in words is "one trillion, two hundred twelve billion, two hundred million, one hundred twenty-two thousand, twelve".