2001222211101 has 8 divisors (see below), whose sum is σ = 2675985897504. Its totient is φ = 1330303332720.

The previous prime is 2001222211061. The next prime is 2001222211123. The reversal of 2001222211101 is 1011122221002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001222211101 - 2¹⁴ = 2001222194717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001222211151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961200790 + ... + 961202871.

It is an arithmetic number, because the mean of its divisors is an integer number (334498237188).

Almost surely, 2^{2001222211101} is an apocalyptic number.

It is an amenable number.

2001222211101 is a deficient number, since it is larger than the sum of its proper divisors (674763686403).

2001222211101 is a wasteful number, since it uses less digits than its factorization.

2001222211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922404011.

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

Adding to 2001222211101 its reverse (1011122221002), we get a palindrome (3012344432103).

Subtracting from 2001222211101 its reverse (1011122221002), we obtain a palindrome (990099990099).

The spelling of 2001222211101 in words is "two trillion, one billion, two hundred twenty-two million, two hundred eleven thousand, one hundred one".