2001220101210 has 32 divisors (see below), whose sum is σ = 5239558084032. Its totient is φ = 485144266880.

The previous prime is 2001220101151. The next prime is 2001220101217. The reversal of 2001220101210 is 121010221002.

It is not an unprimeable number, because it can be changed into a prime (2001220101217) 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 15 ways as a sum of consecutive naturals, for example, 3032151339 + ... + 3032151998.

It is an arithmetic number, because the mean of its divisors is an integer number (163736190126).

Almost surely, 2^{2001220101210} is an apocalyptic number.

2001220101210 is an abundant number, since it is smaller than the sum of its proper divisors (3238337982822).

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

2001220101210 is a wasteful number, since it uses less digits than its factorization.

2001220101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064303358.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2001220101210 its reverse (121010221002), we get a palindrome (2122230322212).

The spelling of 2001220101210 in words is "two trillion, one billion, two hundred twenty million, one hundred one thousand, two hundred ten".