Search a number
-
+
1020101011 = 4049251939
BaseRepresentation
bin111100110011011…
…000000110010011
32122002111111111221
4330303120012103
54042121213021
6245120145511
734164500266
oct7463300623
92562444457
101020101011
11483902a96
12245768297
13133457587
14996a0cdd
155e852241
hex3ccd8193

1020101011 has 4 divisors (see below), whose sum is σ = 1020357000. Its totient is φ = 1019845024.

The previous prime is 1020101003. The next prime is 1020101021. The reversal of 1020101011 is 1101010201.

1020101011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101010201 = 2937965869.

It is a cyclic number.

It is not a de Polignac number, because 1020101011 - 23 = 1020101003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020100985 and 1020101003.

It is not an unprimeable number, because it can be changed into a prime (1020101021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121921 + ... + 130018.

It is an arithmetic number, because the mean of its divisors is an integer number (255089250).

Almost surely, 21020101011 is an apocalyptic number.

1020101011 is a deficient number, since it is larger than the sum of its proper divisors (255989).

1020101011 is an equidigital number, since it uses as much as digits as its factorization.

1020101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255988.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1020101011 is about 31939.0201947399. The cubic root of 1020101011 is about 1006.6559372105.

Adding to 1020101011 its reverse (1101010201), we get a palindrome (2121111212).

The spelling of 1020101011 in words is "one billion, twenty million, one hundred one thousand, eleven".

Divisors: 1 4049 251939 1020101011