Search a number
-
+
122101212101 = 1111100110191
BaseRepresentation
bin111000110110111001…
…1001010001111000101
3102200011102222020121212
41301231303022033011
54000030402241401
6132031552421205
711551532115131
oct1615563121705
9380142866555
10122101212101
1147867a50950
121b7b7547805
13b68b60ab3b
145ca442a3c1
1532996abdbb
hex1c6dcca3c5

122101212101 has 4 divisors (see below), whose sum is σ = 133201322304. Its totient is φ = 111001101900.

The previous prime is 122101212091. The next prime is 122101212113. The reversal of 122101212101 is 101212101221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122101212101 - 214 = 122101195717 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 (122101217101) 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, 5550055085 + ... + 5550055106.

It is an arithmetic number, because the mean of its divisors is an integer number (33300330576).

Almost surely, 2122101212101 is an apocalyptic number.

122101212101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122101212101 is a deficient number, since it is larger than the sum of its proper divisors (11100110203).

122101212101 is a wasteful number, since it uses less digits than its factorization.

122101212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11100110202.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122101212101 its reverse (101212101221), we get a palindrome (223313313322).

The spelling of 122101212101 in words is "one hundred twenty-two billion, one hundred one million, two hundred twelve thousand, one hundred one".

Divisors: 1 11 11100110191 122101212101