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122001112001 = 683178625347
BaseRepresentation
bin111000110011111010…
…1010011101111000001
3102122220110121122002202
41301213311103233001
53444324241041001
6132014015122545
711546205225116
oct1614765235701
9378813548082
10122001112001
11478164a119a
121b789b13455
13b673960902
145c9501090d
1532909d796b
hex1c67d53bc1

122001112001 has 4 divisors (see below), whose sum is σ = 122179738032. Its totient is φ = 121822485972.

The previous prime is 122001111977. The next prime is 122001112007. The reversal of 122001112001 is 100211100221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100211100221 = 671495688063.

It is a cyclic number.

It is not a de Polignac number, because 122001112001 - 214 = 122001095617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122001112007) 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, 89311991 + ... + 89313356.

It is an arithmetic number, because the mean of its divisors is an integer number (30544934508).

Almost surely, 2122001112001 is an apocalyptic number.

It is an amenable number.

122001112001 is a deficient number, since it is larger than the sum of its proper divisors (178626031).

122001112001 is an equidigital number, since it uses as much as digits as its factorization.

122001112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178626030.

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

Adding to 122001112001 its reverse (100211100221), we get a palindrome (222212212222).

The spelling of 122001112001 in words is "one hundred twenty-two billion, one million, one hundred twelve thousand, one".

Divisors: 1 683 178625347 122001112001