2001120100121 has 8 divisors (see below), whose sum is σ = 2048752278144. Its totient is φ = 1953537672240.

The previous prime is 2001120100033. The next prime is 2001120100159. The reversal of 2001120100121 is 1210010211002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001120100121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001120100171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12356126 + ... + 12517031.

It is an arithmetic number, because the mean of its divisors is an integer number (256094034768).

Almost surely, 2^{2001120100121} is an apocalyptic number.

It is an amenable number.

2001120100121 is a deficient number, since it is larger than the sum of its proper divisors (47632178023).

2001120100121 is a wasteful number, since it uses less digits than its factorization.

2001120100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24875071.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2001120100121 its reverse (1210010211002), we get a palindrome (3211130311123).

The spelling of 2001120100121 in words is "two trillion, one billion, one hundred twenty million, one hundred thousand, one hundred twenty-one".