Base | Representation |
---|---|
bin | 11011110001000101001110… |
… | …011011101111001100100101 |
3 | 121000101120101012112000022102 |
4 | 123301011032123233030211 |
5 | 112001304001440134341 |
6 | 1111421113100141445 |
7 | 34502613304421201 |
oct | 3361051633571445 |
9 | 530346335460272 |
10 | 122120121021221 |
11 | 35a02941719154 |
12 | 11843845537885 |
13 | 531ab54c6c09b |
14 | 2222906d69b01 |
15 | e1b958041c9b |
hex | 6f114e6ef325 |
122120121021221 has 16 divisors (see below), whose sum is σ = 126198941307648. Its totient is φ = 118097640360000.
The previous prime is 122120121021181. The next prime is 122120121021247.
122120121021221 is nontrivially palindromic in base 10.
It is a cyclic number.
It is not a de Polignac number, because 122120121021221 - 226 = 122120053912357 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 122120121021193 and 122120121021202.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (122120121021281) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522767396 + ... + 523000946.
It is an arithmetic number, because the mean of its divisors is an integer number (7887433831728).
Almost surely, 2122120121021221 is an apocalyptic number.
It is an amenable number.
122120121021221 is a deficient number, since it is larger than the sum of its proper divisors (4078820286427).
122120121021221 is a wasteful number, since it uses less digits than its factorization.
122120121021221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 354092.
The product of its (nonzero) digits is 128, while the sum is 20.
The spelling of 122120121021221 in words is "one hundred twenty-two trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, two hundred twenty-one".
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