2001220211210 has 96 divisors (see below), whose sum is σ = 4183123150080. Its totient is φ = 687672782720.

The previous prime is 2001220211171. The next prime is 2001220211227. The reversal of 2001220211210 is 121120221002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1042517 + ... + 2255943.

It is an arithmetic number, because the mean of its divisors is an integer number (43574199480).

Almost surely, 2^{2001220211210} is an apocalyptic number.

2001220211210 is an abundant number, since it is smaller than the sum of its proper divisors (2181902938870).

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

2001220211210 is a wasteful number, since it uses less digits than its factorization.

2001220211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213532 (or 1213521 counting only the distinct ones).

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

Adding to 2001220211210 its reverse (121120221002), we get a palindrome (2122340432212).

The spelling of 2001220211210 in words is "two trillion, one billion, two hundred twenty million, two hundred eleven thousand, two hundred ten".