2001021132 has 24 divisors (see below), whose sum is σ = 5093508672. Its totient is φ = 606370000.

The previous prime is 2001021109. The next prime is 2001021149. The reversal of 2001021132 is 2311201002.

It is a super-2 number, since 2×2001021132² = 8008171141421122848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7579494 + ... + 7579757.

It is an arithmetic number, because the mean of its divisors is an integer number (212229528).

Almost surely, 2^2001021132 is an apocalyptic number.

2001021132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2001021132 is an abundant number, since it is smaller than the sum of its proper divisors (3092487540).

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

2001021132 is a wasteful number, since it uses less digits than its factorization.

2001021132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15159269 (or 15159267 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2001021132 is about 44732.7746959654. The cubic root of 2001021132 is about 1260.1354376962.

Adding to 2001021132 its reverse (2311201002), we get a palindrome (4312222134).

The spelling of 2001021132 in words is "two billion, one million, twenty-one thousand, one hundred thirty-two".