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12220195141 = 7112713131871
BaseRepresentation
bin10110110000110000…
…10110000101000101
31011112122110020022001
423120120112011011
5200011332221031
65340333105301
7611553642040
oct133030260505
934478406261
1012220195141
115200a88530
122450628231
1311c996cccb
1483cd79c57
154b7c68861
hex2d8616145

12220195141 has 32 divisors (see below), whose sum is σ = 15348842496. Its totient is φ = 9451728000.

The previous prime is 12220195139. The next prime is 12220195177. The reversal of 12220195141 is 14159102221.

It is not a de Polignac number, because 12220195141 - 21 = 12220195139 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 (12220195111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6530436 + ... + 6532306.

It is an arithmetic number, because the mean of its divisors is an integer number (479651328).

Almost surely, 212220195141 is an apocalyptic number.

12220195141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12220195141 is a deficient number, since it is larger than the sum of its proper divisors (3128647355).

12220195141 is a wasteful number, since it uses less digits than its factorization.

12220195141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473.

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 12220195141 its reverse (14159102221), we get a palindrome (26379297362).

The spelling of 12220195141 in words is "twelve billion, two hundred twenty million, one hundred ninety-five thousand, one hundred forty-one".

Divisors: 1 7 11 77 271 313 1871 1897 2191 2981 3443 13097 20581 20867 24101 84823 144067 507041 585623 593761 933053 3549287 4099361 5577451 6441853 6531371 39042157 45092971 158703833 1110926831 1745742163 12220195141