Base | Representation |
---|---|
bin | 10010101111010111… |
… | …011010100100000101 |
3 | 1220221100010112100202 |
4 | 102233113122210011 |
5 | 312202214120401 |
6 | 13124404420245 |
7 | 1311433230431 |
oct | 225727324405 |
9 | 56840115322 |
10 | 20122020101 |
11 | 85963a0587 |
12 | 3a969a7685 |
13 | 1b88a5b191 |
14 | d8c5a99c1 |
15 | 7cb82006b |
hex | 4af5da905 |
20122020101 has 8 divisors (see below), whose sum is σ = 20348037600. Its totient is φ = 19896755760.
The previous prime is 20122020073. The next prime is 20122020109. The reversal of 20122020101 is 10102022102.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-20122020101 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20122020109) 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, 134471 + ... + 241508.
It is an arithmetic number, because the mean of its divisors is an integer number (2543504700).
Almost surely, 220122020101 is an apocalyptic number.
It is an amenable number.
20122020101 is a deficient number, since it is larger than the sum of its proper divisors (226017499).
20122020101 is a wasteful number, since it uses less digits than its factorization.
20122020101 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 376579.
The product of its (nonzero) digits is 16, while the sum is 11.
Adding to 20122020101 its reverse (10102022102), we get a palindrome (30224042203).
The spelling of 20122020101 in words is "twenty billion, one hundred twenty-two million, twenty thousand, one hundred one".
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