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BaseRepresentation
bin11110101111000011000…
…001111010101100010001
321110220200221122210021002
4132233003001322230101
5234101040324031001
64254141422311345
7305410555204544
oct36570301725421
97426627583232
102112101002001
11744811a53891
122a140a428555
1312422a110213
1474324b0085b
1539e1978946b
hex1ebc307ab11

2112101002001 has 4 divisors (see below), whose sum is σ = 2112649176372. Its totient is φ = 2111552827632.

The previous prime is 2112101001991. The next prime is 2112101002003. The reversal of 2112101002001 is 1002001012112.

Adding to 2112101002001 its reverse (1002001012112), we get a palindrome (3114102014113).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2072678502400 + 39422499601 = 1439680^2 + 198551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2112101002001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2112101002003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274081406 + ... + 274089111.

It is an arithmetic number, because the mean of its divisors is an integer number (528162294093).

Almost surely, 22112101002001 is an apocalyptic number.

It is an amenable number.

2112101002001 is a deficient number, since it is larger than the sum of its proper divisors (548174371).

2112101002001 is an equidigital number, since it uses as much as digits as its factorization.

2112101002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548174370.

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

The spelling of 2112101002001 in words is "two trillion, one hundred twelve billion, one hundred one million, two thousand, one".

Divisors: 1 3853 548170517 2112101002001