2002001122100 has 144 divisors (see below), whose sum is σ = 4984993440000. Its totient is φ = 683635921920.

The previous prime is 2002001122091. The next prime is 2002001122151. The reversal of 2002001122100 is 12211002002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232813601 + ... + 232822199.

It is an arithmetic number, because the mean of its divisors is an integer number (34618010000).

Almost surely, 2^{2002001122100} is an apocalyptic number.

2002001122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2002001122100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2492496720000).

2002001122100 is an abundant number, since it is smaller than the sum of its proper divisors (2982992317900).

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

2002001122100 is a wasteful number, since it uses less digits than its factorization.

2002001122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9922 (or 9915 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2002001122100 its reverse (12211002002), we get a palindrome (2014212124102).

The spelling of 2002001122100 in words is "two trillion, two billion, one million, one hundred twenty-two thousand, one hundred".