2001232100 has 36 divisors (see below), whose sum is σ = 4963057344. Its totient is φ = 686136480.

The previous prime is 2001232069. The next prime is 2001232117. The reversal of 2001232100 is 12321002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1428752 + ... + 1430151.

It is an arithmetic number, because the mean of its divisors is an integer number (137862704).

Almost surely, 2^2001232100 is an apocalyptic number.

2001232100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001232100 is an abundant number, since it is smaller than the sum of its proper divisors (2961825244).

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

2001232100 is a wasteful number, since it uses less digits than its factorization.

2001232100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858924 (or 2858917 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2001232100 is about 44735.1327258565. The cubic root of 2001232100 is about 1260.1797215715.

Adding to 2001232100 its reverse (12321002), we get a palindrome (2013553102).

The spelling of 2001232100 in words is "two billion, one million, two hundred thirty-two thousand, one hundred".