2001131200 has 84 divisors (see below), whose sum is σ = 5213753352. Its totient is φ = 753356800.

The previous prime is 2001131179. The next prime is 2001131219. The reversal of 2001131200 is 21311002.

It is a super-2 number, since 2×2001131200² = 8009052159226880000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 9586 + ... + 63985.

Almost surely, 2^2001131200 is an apocalyptic number.

2001131200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001131200 is an abundant number, since it is smaller than the sum of its proper divisors (3212622152).

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

2001131200 is a wasteful number, since it uses less digits than its factorization.

2001131200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73610 (or 73595 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2001131200 is about 44734.0049626679. The cubic root of 2001131200 is about 1260.1585422405.

Adding to 2001131200 its reverse (21311002), we get a palindrome (2022442202).

The spelling of 2001131200 in words is "two billion, one million, one hundred thirty-one thousand, two hundred".