2001220102 has 32 divisors (see below), whose sum is σ = 3503287872. Its totient is φ = 839683584.

The previous prime is 2001220099. The next prime is 2001220103. The reversal of 2001220102 is 2010221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001220103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132868 + ... + 147160.

It is an arithmetic number, because the mean of its divisors is an integer number (109477746).

Almost surely, 2^2001220102 is an apocalyptic number.

2001220102 is a deficient number, since it is larger than the sum of its proper divisors (1502067770).

2001220102 is a wasteful number, since it uses less digits than its factorization.

2001220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14512.

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

The square root of 2001220102 is about 44734.9986252375. The cubic root of 2001220102 is about 1260.1772031785.

Adding to 2001220102 its reverse (2010221002), we get a palindrome (4011441104).

The spelling of 2001220102 in words is "two billion, one million, two hundred twenty thousand, one hundred two".