2001109092820 has 48 divisors (see below), whose sum is σ = 4348815303168. Its totient is φ = 772671588480.

The previous prime is 2001109092817. The next prime is 2001109092833. The reversal of 2001109092820 is 282909011002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3818842 + ... + 4311121.

It is an arithmetic number, because the mean of its divisors is an integer number (90600318816).

Almost surely, 2^{2001109092820} is an apocalyptic number.

2001109092820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001109092820 is an abundant number, since it is smaller than the sum of its proper divisors (2347706210348).

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

2001109092820 is a wasteful number, since it uses less digits than its factorization.

2001109092820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8130400 (or 8130398 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 2001109092820 in words is "two trillion, one billion, one hundred nine million, ninety-two thousand, eight hundred twenty".