Base | Representation |
---|---|
bin | 10110100010100100… |
… | …11101000000001001 |
3 | 1011020100120011112110 |
4 | 23101102131000021 |
5 | 144240402210441 |
6 | 5320442532533 |
7 | 605610405660 |
oct | 132122350011 |
9 | 34210504473 |
10 | 12101210121 |
11 | 514a8aa300 |
12 | 2418807149 |
13 | 11ab110080 |
14 | 82b245dd7 |
15 | 4ac5b3b16 |
hex | 2d149d009 |
12101210121 has 96 divisors (see below), whose sum is σ = 22420029184. Its totient is φ = 5645376000.
The previous prime is 12101210119. The next prime is 12101210123.
12101210121 is nontrivially palindromic in base 10.
12101210121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.
It is an interprime number because it is at equal distance from previous prime (12101210119) and next prime (12101210123).
It is not a de Polignac number, because 12101210121 - 21 = 12101210119 is a prime.
It is an alternating number because its digits alternate between odd and even.
12101210121 is a modest number, since divided by 1210121 gives 121 as remainder.
It is a junction number, because it is equal to n+sod(n) for n = 12101210097 and 12101210106.
It is not an unprimeable number, because it can be changed into a prime (12101210123) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1217271 + ... + 1227171.
Almost surely, 212101210121 is an apocalyptic number.
12101210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
12101210121 is a deficient number, since it is larger than the sum of its proper divisors (10318819063).
12101210121 is a wasteful number, since it uses less digits than its factorization.
12101210121 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9983 (or 9972 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 12.
It can be divided in two parts, 12101 and 210121, that added together give a palindrome (222222).
The spelling of 12101210121 in words is "twelve billion, one hundred one million, two hundred ten thousand, one hundred twenty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.073 sec. • engine limits •