Base | Representation |
---|---|
bin | 111000110111011111… |
… | …1110010100000111111 |
3 | 102200012211202211002021 |
4 | 1301232333302200333 |
5 | 4000101023100111 |
6 | 132033551141011 |
7 | 11552164631413 |
oct | 1615677624077 |
9 | 380184684067 |
10 | 122121300031 |
11 | 47878321245 |
12 | 1b802214767 |
13 | b6928222a3 |
14 | 5ca6d78d43 |
15 | 329b328d71 |
hex | 1c6eff283f |
122121300031 has 8 divisors (see below), whose sum is σ = 122578272000. Its totient is φ = 121665038040.
The previous prime is 122121300029. The next prime is 122121300053. The reversal of 122121300031 is 130003121221.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 122121300031 - 21 = 122121300029 is a prime.
It is a super-2 number, since 2×1221213000312 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 122121299978 and 122121300014.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (122121300061) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168420 + ... + 522118.
It is an arithmetic number, because the mean of its divisors is an integer number (15322284000).
Almost surely, 2122121300031 is an apocalyptic number.
122121300031 is a deficient number, since it is larger than the sum of its proper divisors (456971969).
122121300031 is an equidigital number, since it uses as much as digits as its factorization.
122121300031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 354989.
The product of its (nonzero) digits is 72, while the sum is 16.
Adding to 122121300031 its reverse (130003121221), we get a palindrome (252124421252).
The spelling of 122121300031 in words is "one hundred twenty-two billion, one hundred twenty-one million, three hundred thousand, thirty-one".
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