2001222010000 has 50 divisors (see below), whose sum is σ = 4845158632622. Its totient is φ = 800488800000.

The previous prime is 2001222009989. The next prime is 2001222010031. The reversal of 2001222010000 is 102221002.

It can be written as a sum of positive squares in 5 ways, for example, as 1257232957696 + 743989052304 = 1121264^2 + 862548^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 100051101 + ... + 100071100.

Almost surely, 2^{2001222010000} is an apocalyptic number.

2001222010000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001222010000 is an abundant number, since it is smaller than the sum of its proper divisors (2843936622622).

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

2001222010000 is an equidigital number, since it uses as much as digits as its factorization.

2001222010000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200122229 (or 200122208 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2001222010000 its reverse (102221002), we get a palindrome (2001324231002).

It can be divided in two parts, 200122 and 2010000, that added together give a palindrome (2210122).

The spelling of 2001222010000 in words is "two trillion, one billion, two hundred twenty-two million, ten thousand".