1212202120012 has 12 divisors (see below), whose sum is σ = 2284534764736. Its totient is φ = 559477901520.

The previous prime is 1212202119991. The next prime is 1212202120013. The reversal of 1212202120012 is 2100212022121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1212202120013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11655789564 + ... + 11655789667.

Almost surely, 2^{1212202120012} is an apocalyptic number.

It is an amenable number.

1212202120012 is a deficient number, since it is larger than the sum of its proper divisors (1072332644724).

1212202120012 is a wasteful number, since it uses less digits than its factorization.

1212202120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23311579248 (or 23311579246 counting only the distinct ones).

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

Adding to 1212202120012 its reverse (2100212022121), we get a palindrome (3312414142133).

The spelling of 1212202120012 in words is "one trillion, two hundred twelve billion, two hundred two million, one hundred twenty thousand, twelve".