2001211222110 has 32 divisors (see below), whose sum is σ = 5011728975360. Its totient is φ = 510453876768.

The previous prime is 2001211222099. The next prime is 2001211222123. The reversal of 2001211222110 is 112221121002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2001211222110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1450152370 + ... + 1450153749.

It is an arithmetic number, because the mean of its divisors is an integer number (156616530480).

Almost surely, 2^{2001211222110} is an apocalyptic number.

2001211222110 is an abundant number, since it is smaller than the sum of its proper divisors (3010517753250).

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

2001211222110 is a wasteful number, since it uses less digits than its factorization.

2001211222110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900306152.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2001211222110 its reverse (112221121002), we get a palindrome (2113432343112).

The spelling of 2001211222110 in words is "two trillion, one billion, two hundred eleven million, two hundred twenty-two thousand, one hundred ten".