2001220012112 has 20 divisors (see below), whose sum is σ = 4045944807840. Its totient is φ = 957105223008.

The previous prime is 2001220012111. The next prime is 2001220012123. The reversal of 2001220012112 is 2112100221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001220012111) 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, 2719048562 + ... + 2719049297.

It is an arithmetic number, because the mean of its divisors is an integer number (202297240392).

Almost surely, 2^{2001220012112} is an apocalyptic number.

It is an amenable number.

2001220012112 is an abundant number, since it is smaller than the sum of its proper divisors (2044724795728).

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

2001220012112 is a wasteful number, since it uses less digits than its factorization.

2001220012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438097890 (or 5438097884 counting only the distinct ones).

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

Adding to 2001220012112 its reverse (2112100221002), we get a palindrome (4113320233114).

The spelling of 2001220012112 in words is "two trillion, one billion, two hundred twenty million, twelve thousand, one hundred twelve".