2001121201120 has 48 divisors (see below), whose sum is σ = 4976472468240. Its totient is φ = 758319611904.

The previous prime is 2001121201117. The next prime is 2001121201133. The reversal of 2001121201120 is 211021211002.

It is a self number, because there is not a number n which added to its sum of digits gives 2001121201120.

It is a congruent number.

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, 329128737 + ... + 329134816.

It is an arithmetic number, because the mean of its divisors is an integer number (103676509755).

Almost surely, 2^{2001121201120} is an apocalyptic number.

2001121201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001121201120 is an abundant number, since it is smaller than the sum of its proper divisors (2975351267120).

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

2001121201120 is a wasteful number, since it uses less digits than its factorization.

2001121201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658263587 (or 658263579 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2001121201120 its reverse (211021211002), we get a palindrome (2212142412122).

The spelling of 2001121201120 in words is "two trillion, one billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty".