Search a number
-
+
122210214231 = 3737157284703
BaseRepresentation
bin111000111010001001…
…0111110000101010111
3102200110001002010102210
41301310102332011113
54000241303323411
6132050445004503
711554324452450
oct1616422760527
9380401063383
10122210214231
1147913530856
121b827b53733
13b6a8083c41
145cb4ac2127
1532a403dca6
hex1c744be157

122210214231 has 16 divisors (see below), whose sum is σ = 191258200064. Its totient is φ = 67946991264.

The previous prime is 122210214209. The next prime is 122210214239. The reversal of 122210214231 is 132412012221.

It is a happy number.

It is not a de Polignac number, because 122210214231 - 211 = 122210212183 is a prime.

It is a super-2 number, since 2×1222102142312 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122210214198 and 122210214207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122210214239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78641575 + ... + 78643128.

It is an arithmetic number, because the mean of its divisors is an integer number (11953637504).

Almost surely, 2122210214231 is an apocalyptic number.

122210214231 is a deficient number, since it is larger than the sum of its proper divisors (69047985833).

122210214231 is a wasteful number, since it uses less digits than its factorization.

122210214231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157284750.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 122210214231 its reverse (132412012221), we get a palindrome (254622226452).

The spelling of 122210214231 in words is "one hundred twenty-two billion, two hundred ten million, two hundred fourteen thousand, two hundred thirty-one".

Divisors: 1 3 7 21 37 111 259 777 157284703 471854109 1100992921 3302978763 5819534011 17458602033 40736738077 122210214231