20101220120012 has 12 divisors (see below), whose sum is σ = 35228639073096. Its totient is φ = 10035894670560.

The previous prime is 20101220120011. The next prime is 20101220120017. The reversal of 20101220120012 is 21002102210102.

It is not an unprimeable number, because it can be changed into a prime (20101220120011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3678844289 + ... + 3678849752.

It is an arithmetic number, because the mean of its divisors is an integer number (2935719922758).

Almost surely, 2^{20101220120012} is an apocalyptic number.

It is an amenable number.

20101220120012 is a deficient number, since it is larger than the sum of its proper divisors (15127418953084).

20101220120012 is a wasteful number, since it uses less digits than its factorization.

20101220120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7357694728 (or 7357694726 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20101220120012 its reverse (21002102210102), we get a palindrome (41103322330114).

The spelling of 20101220120012 in words is "twenty trillion, one hundred one billion, two hundred twenty million, one hundred twenty thousand, twelve".