20120111210012 has 24 divisors (see below), whose sum is σ = 39062157361920. Its totient is φ = 8990496533360.

The previous prime is 20120111210011. The next prime is 20120111210063. The reversal of 20120111210012 is 21001211102102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120111210011) 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 7 ways as a sum of consecutive naturals, for example, 3875211428 + ... + 3875216619.

It is an arithmetic number, because the mean of its divisors is an integer number (1627589890080).

Almost surely, 2^{20120111210012} is an apocalyptic number.

20120111210012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20120111210012 is a deficient number, since it is larger than the sum of its proper divisors (18942046151908).

20120111210012 is a wasteful number, since it uses less digits than its factorization.

20120111210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7750428121 (or 7750428119 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20120111210012 its reverse (21001211102102), we get a palindrome (41121322312114).

The spelling of 20120111210012 in words is "twenty trillion, one hundred twenty billion, one hundred eleven million, two hundred ten thousand, twelve".