2001222102010 has 16 divisors (see below), whose sum is σ = 3726413569800. Its totient is φ = 772885777216.

The previous prime is 2001222101971. The next prime is 2001222102013. The reversal of 2001222102010 is 102012221002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1800848589849 + 200373512161 = 1341957^2 + 447631^2 .

It is not an unprimeable number, because it can be changed into a prime (2001222102013) 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, 3450382645 + ... + 3450383224.

Almost surely, 2^{2001222102010} is an apocalyptic number.

2001222102010 is a deficient number, since it is larger than the sum of its proper divisors (1725191467790).

2001222102010 is a wasteful number, since it uses less digits than its factorization.

2001222102010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6900765905.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2001222102010 its reverse (102012221002), we get a palindrome (2103234323012).

The spelling of 2001222102010 in words is "two trillion, one billion, two hundred twenty-two million, one hundred two thousand, ten".