2001212120110 has 128 divisors (see below), whose sum is σ = 4466399616000. Its totient is φ = 630270305280.

The previous prime is 2001212120059. The next prime is 2001212120179. The reversal of 2001212120110 is 110212121002.

It is a super-2 number, since 2×2001212120110² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8775816 + ... + 9000964.

It is an arithmetic number, because the mean of its divisors is an integer number (34893747000).

Almost surely, 2^{2001212120110} is an apocalyptic number.

2001212120110 is an abundant number, since it is smaller than the sum of its proper divisors (2465187495890).

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

2001212120110 is a wasteful number, since it uses less digits than its factorization.

2001212120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225386.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2001212120110 its reverse (110212121002), we get a palindrome (2111424241112).

The spelling of 2001212120110 in words is "two trillion, one billion, two hundred twelve million, one hundred twenty thousand, one hundred ten".