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122121212310001 = 244749906502783
BaseRepresentation
bin11011110001000110001111…
…011110101011000111110001
3121000101200012020222020002101
4123301012033132223013301
5112001313220322410001
61111421413242220401
734502652325263142
oct3361061736530761
9530350166866071
10122121212310001
1135a03351723603
1211843aaaab4701
13531ac9a08c9a8
1422229abc7bac9
15e1b9bdc56a01
hex6f118f7ab1f1

122121212310001 has 4 divisors (see below), whose sum is σ = 122171118815232. Its totient is φ = 122071305804772.

The previous prime is 122121212309977. The next prime is 122121212310007. The reversal of 122121212310001 is 100013212121221.

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.

It is a cyclic number.

It is not a de Polignac number, because 122121212310001 - 241 = 119922189054449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122121212310007) 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, 24953248945 + ... + 24953253838.

It is an arithmetic number, because the mean of its divisors is an integer number (30542779703808).

Almost surely, 2122121212310001 is an apocalyptic number.

It is an amenable number.

122121212310001 is a deficient number, since it is larger than the sum of its proper divisors (49906505231).

122121212310001 is an equidigital number, since it uses as much as digits as its factorization.

122121212310001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49906505230.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 122121212310001 its reverse (100013212121221), we get a palindrome (222134424431222).

The spelling of 122121212310001 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, two hundred twelve million, three hundred ten thousand, one".

Divisors: 1 2447 49906502783 122121212310001