Base | Representation |
---|---|
bin | 10001110000010011110… |
… | …000001011111101111100 |
3 | 11022122022000101011022210 |
4 | 101300103300023331330 |
5 | 124442232120023400 |
6 | 2332301314340420 |
7 | 154102160553645 |
oct | 21602360137574 |
9 | 4278260334283 |
10 | 1220102111100 |
11 | 430495919754 |
12 | 17856988a710 |
13 | 8b094194cc2 |
14 | 430a61d06cc |
15 | 21b0e8c6950 |
hex | 11c13c0bf7c |
1220102111100 has 72 divisors (see below), whose sum is σ = 3612258939520. Its totient is φ = 317794034880.
The previous prime is 1220102111029. The next prime is 1220102111101. The reversal of 1220102111100 is 11112010221.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1220102111101) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47277880 + ... + 47303679.
Almost surely, 21220102111100 is an apocalyptic number.
1220102111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
1220102111100 is an abundant number, since it is smaller than the sum of its proper divisors (2392156828420).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1220102111100 is a wasteful number, since it uses less digits than its factorization.
1220102111100 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 94581619 (or 94581612 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 12.
Adding to 1220102111100 its reverse (11112010221), we get a palindrome (1231214121321).
The spelling of 1220102111100 in words is "one trillion, two hundred twenty billion, one hundred two million, one hundred eleven thousand, one hundred".
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