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122030223231 = 372830137573
BaseRepresentation
bin111000110100110010…
…0010110111101111111
3102122222111101122012110
41301221210112331333
53444404214120411
6132020535105103
711550010532400
oct1615144267577
9378874348173
10122030223231
1147830974964
121b797812193
13b6799b41a7
145c98c2b9a7
1532933382a6
hex1c69916f7f

122030223231 has 12 divisors (see below), whose sum is σ = 189271366872. Its totient is φ = 69731556048.

The previous prime is 122030223223. The next prime is 122030223239. The reversal of 122030223231 is 132322030221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122030223223) and next prime (122030223239).

It is not a de Polignac number, because 122030223231 - 23 = 122030223223 is a prime.

It is a super-2 number, since 2×1220302232312 (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 junction number, because it is equal to n+sod(n) for n = 122030223198 and 122030223207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122030223239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415068640 + ... + 415068933.

It is an arithmetic number, because the mean of its divisors is an integer number (15772613906).

Almost surely, 2122030223231 is an apocalyptic number.

122030223231 is a deficient number, since it is larger than the sum of its proper divisors (67241143641).

122030223231 is an equidigital number, since it uses as much as digits as its factorization.

122030223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830137590 (or 830137583 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 122030223231 its reverse (132322030221), we get a palindrome (254352253452).

The spelling of 122030223231 in words is "one hundred twenty-two billion, thirty million, two hundred twenty-three thousand, two hundred thirty-one".

Divisors: 1 3 7 21 49 147 830137573 2490412719 5810963011 17432889033 40676741077 122030223231