2002121100 has 108 divisors (see below), whose sum is σ = 7172065264. Its totient is φ = 457626240.

The previous prime is 2002121071. The next prime is 2002121129. The reversal of 2002121100 is 11212002.

It is an interprime number because it is at equal distance from previous prime (2002121071) and next prime (2002121129).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 152599 + ... + 165198.

Almost surely, 2^2002121100 is an apocalyptic number.

2002121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002121100 is an abundant number, since it is smaller than the sum of its proper divisors (5169944164).

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

2002121100 is a wasteful number, since it uses less digits than its factorization.

2002121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317824 (or 317814 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2002121100 is about 44745.0678846284. The cubic root of 2002121100 is about 1260.3662956200.

Adding to 2002121100 its reverse (11212002), we get a palindrome (2013333102).

The spelling of 2002121100 in words is "two billion, two million, one hundred twenty-one thousand, one hundred".