2001123354025 has 12 divisors (see below), whose sum is σ = 2496251604672. Its totient is φ = 1591312460240.

The previous prime is 2001123353989. The next prime is 2001123354071. The reversal of 2001123354025 is 5204533211002.

It is not a de Polignac number, because 2001123354025 - 2²¹ = 2001121256873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001123353984 and 2001123354002.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 239651317 + ... + 239659666.

It is an arithmetic number, because the mean of its divisors is an integer number (208020967056).

Almost surely, 2^{2001123354025} is an apocalyptic number.

2001123354025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2001123354025 is a deficient number, since it is larger than the sum of its proper divisors (495128250647).

2001123354025 is a wasteful number, since it uses less digits than its factorization.

2001123354025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479311160 (or 479311155 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 2001123354025 its reverse (5204533211002), we get a palindrome (7205656565027).

The spelling of 2001123354025 in words is "two trillion, one billion, one hundred twenty-three million, three hundred fifty-four thousand, twenty-five".