2001102222222 has 24 divisors (see below), whose sum is σ = 4427970876576. Its totient is φ = 652841859456.

The previous prime is 2001102222151. The next prime is 2001102222227. The reversal of 2001102222222 is 2222222011002.

It is a Harshad number since it is a multiple of its sum of digits (18).

2001102222222 is a modest number, since divided by 2222222 gives 200110 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2001102222195 and 2001102222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001102222227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1182683683 + ... + 1182685374.

It is an arithmetic number, because the mean of its divisors is an integer number (184498786524).

Almost surely, 2^{2001102222222} is an apocalyptic number.

2001102222222 is an abundant number, since it is smaller than the sum of its proper divisors (2426868654354).

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

2001102222222 is a wasteful number, since it uses less digits than its factorization.

2001102222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365369112 (or 2365369109 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2001102222222 its reverse (2222222011002), we get a palindrome (4223324233224).

The spelling of 2001102222222 in words is "two trillion, one billion, one hundred two million, two hundred twenty-two thousand, two hundred twenty-two".