2001012120210 has 128 divisors (see below), whose sum is σ = 4885907330304. Its totient is φ = 524415467520.

The previous prime is 2001012120209. The next prime is 2001012120221. The reversal of 2001012120210 is 120212101002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 327334114 + ... + 327340226.

It is an arithmetic number, because the mean of its divisors is an integer number (38171151018).

Almost surely, 2^{2001012120210} is an apocalyptic number.

2001012120210 is an abundant number, since it is smaller than the sum of its proper divisors (2884895210094).

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

2001012120210 is a wasteful number, since it uses less digits than its factorization.

2001012120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6988.

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

Adding to 2001012120210 its reverse (120212101002), we get a palindrome (2121224221212).

The spelling of 2001012120210 in words is "two trillion, one billion, twelve million, one hundred twenty thousand, two hundred ten".