Search a number
-
+
121020111233 = 7131131973949
BaseRepresentation
bin111000010110101011…
…1000101100110000001
3102120101002200122000222
41300231113011212001
53440322122024413
6131332412552425
711512663654430
oct1605527054601
9376332618028
10121020111233
114736277485a
121b555482715
13b548646498
145c00a0b117
15323480ab08
hex1c2d5c5981

121020111233 has 8 divisors (see below), whose sum is σ = 139364491200. Its totient is φ = 102939679440.

The previous prime is 121020111217. The next prime is 121020111257. The reversal of 121020111233 is 332111020121.

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 121020111233 - 24 = 121020111217 is a prime.

It is a super-3 number, since 3×1210201112333 (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121020111283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65986058 + ... + 65987891.

It is an arithmetic number, because the mean of its divisors is an integer number (17420561400).

Almost surely, 2121020111233 is an apocalyptic number.

It is an amenable number.

121020111233 is a deficient number, since it is larger than the sum of its proper divisors (18344379967).

121020111233 is a wasteful number, since it uses less digits than its factorization.

121020111233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131974087.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121020111233 its reverse (332111020121), we get a palindrome (453131131354).

The spelling of 121020111233 in words is "one hundred twenty-one billion, twenty million, one hundred eleven thousand, two hundred thirty-three".

Divisors: 1 7 131 917 131973949 923817643 17288587319 121020111233