2001101312 has 40 divisors (see below), whose sum is σ = 4569487296. Its totient is φ = 857613312.

The previous prime is 2001101287. The next prime is 2001101327. The reversal of 2001101312 is 2131011002.

It is a junction number, because it is equal to n+sod(n) for n = 2001101293 and 2001101302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275588 + ... + 282755.

Almost surely, 2^2001101312 is an apocalyptic number.

It is an amenable number.

2001101312 is an abundant number, since it is smaller than the sum of its proper divisors (2568385984).

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

2001101312 is an frugal number, since it uses more digits than its factorization.

2001101312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558368 (or 558352 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2001101312 is about 44733.6708978818. The cubic root of 2001101312 is about 1260.1522684880.

Adding to 2001101312 its reverse (2131011002), we get a palindrome (4132112314).

The spelling of 2001101312 in words is "two billion, one million, one hundred one thousand, three hundred twelve".