2001135525220 has 96 divisors (see below), whose sum is σ = 4805995985280. Its totient is φ = 693797529600.

The previous prime is 2001135525217. The next prime is 2001135525241. The reversal of 2001135525220 is 225255311002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1234206 + ... + 2350645.

It is an arithmetic number, because the mean of its divisors is an integer number (50062458180).

Almost surely, 2^{2001135525220} is an apocalyptic number.

2001135525220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001135525220 is an abundant number, since it is smaller than the sum of its proper divisors (2804860460060).

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

2001135525220 is a wasteful number, since it uses less digits than its factorization.

2001135525220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585005 (or 3585003 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 2001135525220 in words is "two trillion, one billion, one hundred thirty-five million, five hundred twenty-five thousand, two hundred twenty".