2001220102002 has 64 divisors (see below), whose sum is σ = 4371625981440. Its totient is φ = 605690870400.

The previous prime is 2001220102001. The next prime is 2001220102003. The reversal of 2001220102002 is 2002010221002.

It is an interprime number because it is at equal distance from previous prime (2001220102001) and next prime (2001220102003).

It is not an unprimeable number, because it can be changed into a prime (2001220102001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263210733 + ... + 263218335.

It is an arithmetic number, because the mean of its divisors is an integer number (68306655960).

Almost surely, 2^{2001220102002} is an apocalyptic number.

2001220102002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001220102002 is an abundant number, since it is smaller than the sum of its proper divisors (2370405879438).

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

2001220102002 is a wasteful number, since it uses less digits than its factorization.

2001220102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11959.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2001220102002 its reverse (2002010221002), we get a palindrome (4003230323004).

The spelling of 2001220102002 in words is "two trillion, one billion, two hundred twenty million, one hundred two thousand, two".