2001123354051 has 24 divisors (see below), whose sum is σ = 2899757174496. Its totient is φ = 1329821660160.

The previous prime is 2001123353989. The next prime is 2001123354071. The reversal of 2001123354051 is 1504533211002.

2001123354051 is a `hidden beast` number, since 2 + 0 + 0 + 112 + 3 + 3 + 540 + 5 + 1 = 666.

It is not a de Polignac number, because 2001123354051 - 2⁶ = 2001123353987 is a prime.

It is a super-2 number, since 2×2001123354051² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2001123354071) 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 23 ways as a sum of consecutive naturals, for example, 3341091 + ... + 3894243.

It is an arithmetic number, because the mean of its divisors is an integer number (120823215604).

Almost surely, 2^{2001123354051} is an apocalyptic number.

2001123354051 is a deficient number, since it is larger than the sum of its proper divisors (898633820445).

2001123354051 is a wasteful number, since it uses less digits than its factorization.

2001123354051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554443 (or 554440 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 2001123354051 its reverse (1504533211002), we get a palindrome (3505656565053).

The spelling of 2001123354051 in words is "two trillion, one billion, one hundred twenty-three million, three hundred fifty-four thousand, fifty-one".